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  1. Article ; Online: Case Report of Anti-Thrombogenicity.

    Boedecker-Lips, Simone C / Batzke, Katharina / Klimpke, Pascal / Holtz, Stefan / Kraus, Daniel / Weinmann-Menke, Julia

    Blood purification

    2023  , Page(s) 1–3

    Abstract: Background: The Toray Filtryzer™-NF is a new polymethyl methacrylate filter with improved hemocompatibility and reduced impact on platelet counts.: Objectives: This suggests that, if necessary, a reduction in anticoagulation may be possible when ... ...

    Abstract Background: The Toray Filtryzer™-NF is a new polymethyl methacrylate filter with improved hemocompatibility and reduced impact on platelet counts.
    Objectives: This suggests that, if necessary, a reduction in anticoagulation may be possible when dialysis is performed with the Toray Filtryzer™-NF.
    Methods: In the following, we dialyzed 5 hemodialysis patients who had a contraindication to full anticoagulation postoperatively or after renal biopsy with the Filtryzer™-NF.
    Results: A significant reduction in heparin administration was achieved, and in 1 patient, heparin substitution was completely omitted. Despite the significantly reduced heparin doses, no thrombosis of the system occurred during the hemodialysis.
    Conclusion: In conclusion, hemodialysis using the Toray Filtryzer™-NF is an effective alternative for patients at significantly increased risk of bleeding.
    Language English
    Publishing date 2023-06-16
    Publishing country Switzerland
    Document type News
    ZDB-ID 605548-5
    ISSN 1421-9735 ; 0253-5068
    ISSN (online) 1421-9735
    ISSN 0253-5068
    DOI 10.1159/000530850
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: COVID-19—Importance for Patients on the Waiting List and after Kidney Transplantation—A Single Center Evaluation in 2020–2021

    Boedecker, Simone C / Klimpke, Pascal / Kraus, Daniel / Runkel, Stefan / Galle, Peter R / Koch, Martina / Weinmann-Menke, Julia

    Pathogens. 2021 Apr. 03, v. 10, no. 4

    2021  

    Abstract: 1) Background: Dialysis patients and recipients of a kidney allograft are at high risk for infection with SARS-CoV-2. It has been shown that the development of potent neutralizing humoral immunity against SARS CoV-2 leads to an increased probability of ... ...

    Abstract (1) Background: Dialysis patients and recipients of a kidney allograft are at high risk for infection with SARS-CoV-2. It has been shown that the development of potent neutralizing humoral immunity against SARS CoV-2 leads to an increased probability of survival. However, the question of whether immunocompromised patients develop antibodies has not yet been sufficiently investigated; (2) Methods: SARS-CoV-2 antibodies were examined in hemodialysis patients on the waiting list for kidney transplantation as well as patients after kidney transplantation. Patients were interviewed about symptoms and comorbidities, BMI, and smoking history; (3) Results: SARS-CoV-2 antibodies were found in 16 out of 259 patients (6%). The trend of infections here reflects the general course of infection in Germany with a peak in November/December of 2020. Remarkably, patients on the waiting list experienced only mild disease. In contrast, transplanted patients had to be hospitalized but recovered rapidly from COVID-19. Most interesting is that all immunosuppressed patients developed antibodies against SARS-CoV-2 after infection; (4) Conclusions: Even with extensive hygiene concepts, an above-average number of patients were infected with SARS-CoV-2 during the second wave of infections in Germany. Because SARS-CoV-2 infection triggered the formation of antibodies even in these immunocompromised patients, we expect vaccination to be effective in this group of patients. Thus, dialysis patients and patients after kidney transplantation should be given high priority in vaccination programs.
    Keywords COVID-19 infection ; Severe acute respiratory syndrome coronavirus 2 ; allografting ; dialysis ; hemodialysis ; humoral immunity ; hygiene ; kidney transplant ; kidneys ; risk ; vaccination ; Germany
    Language English
    Dates of publication 2021-0403
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 2695572-6
    ISSN 2076-0817
    ISSN 2076-0817
    DOI 10.3390/pathogens10040429
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: Validating quantitative PCR assays for cfDNA detection without DNA extraction in exercising SLE patients.

    Neuberger, Elmo W I / Brahmer, Alexandra / Ehlert, Tobias / Kluge, Katrin / Philippi, Keito F A / Boedecker, Simone C / Weinmann-Menke, Julia / Simon, Perikles

    Scientific reports

    2021  Volume 11, Issue 1, Page(s) 13581

    Abstract: Circulating cell-free DNA (cfDNA) has been investigated as a screening tool for many diseases. To avoid expensive and time-consuming DNA isolation, direct quantification PCR assays can be established. However, rigorous validation is required to provide ... ...

    Abstract Circulating cell-free DNA (cfDNA) has been investigated as a screening tool for many diseases. To avoid expensive and time-consuming DNA isolation, direct quantification PCR assays can be established. However, rigorous validation is required to provide reliable data in the clinical and non-clinical context. Considering the International Organization for Standardization, as well as bioanalytical method validation guidelines, we provide a comprehensive procedure to validate assays for cfDNA quantification from blood plasma without DNA isolation. A 90 and 222 bp assay was validated to study the kinetics of cfDNA after exercise in patients with systemic lupus erythematosus (SLE). The assays showed ultra-low limit of quantification (LOQ) with 0.47 and 0.69 ng/ml, repeatability ≤ 11.6% (95% CI 8.1-20.3), and intermediate precision ≤ 12.1% (95% CI 9.2-17.7). Incurred sample reanalysis confirmed the precision of the procedure. The additional consideration of pre-analytical factors shows that centrifugation speed and temperature do not change cfDNA concentrations. In SLE patients cfDNA increases ~ twofold after a walking exercise, normalizing after 60 min of rest. The established assays allow reliable and cost-efficient quantification of cfDNA in minute amounts of plasma in the clinical setting. Additionally, the assay can be used as a tool to determine the impact of pre-analytical factors and validate cfDNA quantity and quality of isolated samples.
    MeSH term(s) Adult ; Cell-Free Nucleic Acids/blood ; Cell-Free Nucleic Acids/genetics ; Female ; Humans ; Lupus Erythematosus, Systemic/blood ; Lupus Erythematosus, Systemic/genetics ; Male ; Middle Aged ; Real-Time Polymerase Chain Reaction
    Chemical Substances Cell-Free Nucleic Acids
    Language English
    Publishing date 2021-06-30
    Publishing country England
    Document type Clinical Trial ; Journal Article ; Validation Study
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-021-92826-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: The Cellular and Humoral Immune Response to SARS-CoV-2 Messenger RNA Vaccines Is Significantly Better in Liver Transplant Patients Compared with Kidney Transplant Patients.

    Lautem, Anja / Boedecker-Lips, Simone Cosima / Schneider, Elisa / Runkel, Stefan / Feist, Christina / Lang, Hauke / Weinmann-Menke, Julia / Koch, Martina

    Pathogens (Basel, Switzerland)

    2023  Volume 12, Issue 7

    Abstract: Patients after organ transplantation have impaired immune response after vaccination against the SARS-CoV-2 virus. So far, published studies have reported quite different response rates to SARS-CoV-2 vaccination, ranging from 15-79% in liver and kidney ... ...

    Abstract Patients after organ transplantation have impaired immune response after vaccination against the SARS-CoV-2 virus. So far, published studies have reported quite different response rates to SARS-CoV-2 vaccination, ranging from 15-79% in liver and kidney transplant recipients. Up to one year after the first vaccine dose, we analyzed the humoral and cellular immune response of 21 liver transplant (LTX) patients after vaccination with mRNA vaccines compared with 28 kidney transplant (KTX) patients. We evaluated IgG against the SARS-CoV-2 spike protein as well as SARS-CoV-2 specific T cells using an ELISpot assay that detected IFN-γ- and/or IL-2-expressing T cells. We found a cellular and/or humoral immune response in 100% of the LTX patients compared with 68% of the KTX patients. Antibody titers against the spike protein of SARS-CoV-2 were significantly higher in the LTX group, and significantly more LTX patients had detectable specific IL-2-producing T cells. The immunosuppression applied in our LTX cohort was lower compared with the KTX cohort (14% triple therapy in LTX patients vs. 79% in KTX patients). One year after the first vaccination, breakthrough infections could be detected in 41% of all organ transplant patients. None of those patients suffered from a severe course of COVID-19 disease, indicating that a partial vaccination response seemed to offer protection to immunosuppressed patients. The better immune response of LTX patients after SARS-CoV-2 vaccination might be due to less intense immunosuppressive therapy compared with KTX patients.
    Language English
    Publishing date 2023-07-05
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2695572-6
    ISSN 2076-0817
    ISSN 2076-0817
    DOI 10.3390/pathogens12070910
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: COVID-19-Importance for Patients on the Waiting List and after Kidney Transplantation-A Single Center Evaluation in 2020-2021.

    Boedecker, Simone C / Klimpke, Pascal / Kraus, Daniel / Runkel, Stefan / Galle, Peter R / Koch, Martina / Weinmann-Menke, Julia

    Pathogens (Basel, Switzerland)

    2021  Volume 10, Issue 4

    Abstract: 1) Background: Dialysis patients and recipients of a kidney allograft are at high risk for infection with SARS-CoV-2. It has been shown that the development of potent neutralizing humoral immunity against SARS CoV-2 leads to an increased probability of ... ...

    Abstract (1) Background: Dialysis patients and recipients of a kidney allograft are at high risk for infection with SARS-CoV-2. It has been shown that the development of potent neutralizing humoral immunity against SARS CoV-2 leads to an increased probability of survival. However, the question of whether immunocompromised patients develop antibodies has not yet been sufficiently investigated; (2) Methods: SARS-CoV-2 antibodies were examined in hemodialysis patients on the waiting list for kidney transplantation as well as patients after kidney transplantation. Patients were interviewed about symptoms and comorbidities, BMI, and smoking history; (3) Results: SARS-CoV-2 antibodies were found in 16 out of 259 patients (6%). The trend of infections here reflects the general course of infection in Germany with a peak in November/December of 2020. Remarkably, patients on the waiting list experienced only mild disease. In contrast, transplanted patients had to be hospitalized but recovered rapidly from COVID-19. Most interesting is that all immunosuppressed patients developed antibodies against SARS-CoV-2 after infection; (4) Conclusions: Even with extensive hygiene concepts, an above-average number of patients were infected with SARS-CoV-2 during the second wave of infections in Germany. Because SARS-CoV-2 infection triggered the formation of antibodies even in these immunocompromised patients, we expect vaccination to be effective in this group of patients. Thus, dialysis patients and patients after kidney transplantation should be given high priority in vaccination programs.
    Language English
    Publishing date 2021-04-03
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2695572-6
    ISSN 2076-0817
    ISSN 2076-0817
    DOI 10.3390/pathogens10040429
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: COVID-19—Importance for Patients on the Waiting List and after Kidney Transplantation—A Single Center Evaluation in 2020–2021

    Simone C. Boedecker / Pascal Klimpke / Daniel Kraus / Stefan Runkel / Peter R. Galle / Martina Koch / Julia Weinmann-Menke

    Pathogens, Vol 10, Iss 429, p

    2021  Volume 429

    Abstract: 1) Background: Dialysis patients and recipients of a kidney allograft are at high risk for infection with SARS-CoV-2. It has been shown that the development of potent neutralizing humoral immunity against SARS CoV-2 leads to an increased probability of ... ...

    Abstract (1) Background: Dialysis patients and recipients of a kidney allograft are at high risk for infection with SARS-CoV-2. It has been shown that the development of potent neutralizing humoral immunity against SARS CoV-2 leads to an increased probability of survival. However, the question of whether immunocompromised patients develop antibodies has not yet been sufficiently investigated; (2) Methods: SARS-CoV-2 antibodies were examined in hemodialysis patients on the waiting list for kidney transplantation as well as patients after kidney transplantation. Patients were interviewed about symptoms and comorbidities, BMI, and smoking history; (3) Results: SARS-CoV-2 antibodies were found in 16 out of 259 patients (6%). The trend of infections here reflects the general course of infection in Germany with a peak in November/December of 2020. Remarkably, patients on the waiting list experienced only mild disease. In contrast, transplanted patients had to be hospitalized but recovered rapidly from COVID-19. Most interesting is that all immunosuppressed patients developed antibodies against SARS-CoV-2 after infection; (4) Conclusions: Even with extensive hygiene concepts, an above-average number of patients were infected with SARS-CoV-2 during the second wave of infections in Germany. Because SARS-CoV-2 infection triggered the formation of antibodies even in these immunocompromised patients, we expect vaccination to be effective in this group of patients. Thus, dialysis patients and patients after kidney transplantation should be given high priority in vaccination programs.
    Keywords COVID-19 ; waiting list ; hemodialysis ; kidney transplantation ; Medicine ; R
    Subject code 610 ; 616
    Language English
    Publishing date 2021-04-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Immunoadsorption and plasma exchange-Efficient treatment options for neurological autoimmune diseases.

    Boedecker, Simone C / Luessi, Felix / Engel, Sinah / Kraus, Daniel / Klimpke, Pascal / Holtz, Stefan / Meinek, Myriam / Marczynski, Paul / Weinmann, Arndt / Weinmann-Menke, Julia

    Journal of clinical apheresis

    2021  Volume 37, Issue 1, Page(s) 70–81

    Abstract: Background: Therapeutic plasma exchange (TPE) and immunoadsorption (IA) are first or second line treatment options in patients with neurological autoimmune diseases, including multiple sclerosis, neuromyelitis optica spectrum disorders (NMSOD), chronic ... ...

    Abstract Background: Therapeutic plasma exchange (TPE) and immunoadsorption (IA) are first or second line treatment options in patients with neurological autoimmune diseases, including multiple sclerosis, neuromyelitis optica spectrum disorders (NMSOD), chronic inflammatory demyelinating polyneuropathy, acute inflammatory demyelinating polyradiculoneuropathy (Guillain-Barré syndrome), and autoimmune encephalitis.
    Methods: In this prospective randomized controlled monocentric study, we assessed safety and efficacy of therapy with IA or TPE in patients with neurological autoimmune diseases. Treatment response was assessed using various neurological scores as well by measuring immunoglobulin and cytokine concentrations. Clinical outcome was evaluated by application of specific scores for the underlying diseases.
    Results: A total of 32 patients were analyzed. Among these, 19 patients were treated with TPE and 13 patients with IA. IA and TPE therapy showed a comparable significant treatment response. In patients with MS and NMOSD, mean EDSS before and after treatment showed a significant reduction after treatment with IA. We observed a significant reduction of the pro-inflammatory cytokines IL-12, lL-17, IL-6, INF-γ, and tumor necrosis factor alpha during IA treatment, whereas this reduction was not seen in patients treated with TPE.
    Conclusions: In summary, both IA and TPE were effective and safe procedures for treating neurological autoimmune diseases. However, there was a trend towards longer therapy response in patients treated with IA compared to TPE, possibly related to a reduction in plasma levels of pro-inflammatory cytokines seen only in the IA-treated group.
    MeSH term(s) Adolescent ; Adult ; Aged ; Autoimmune Diseases of the Nervous System/therapy ; Humans ; Middle Aged ; Plasma Exchange/adverse effects ; Plasmapheresis/adverse effects ; Prospective Studies ; Single-Blind Method ; Treatment Outcome ; Young Adult
    Language English
    Publishing date 2021-12-14
    Publishing country United States
    Document type Journal Article ; Randomized Controlled Trial
    ZDB-ID 604912-6
    ISSN 1098-1101 ; 0733-2459
    ISSN (online) 1098-1101
    ISSN 0733-2459
    DOI 10.1002/jca.21953
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Validating quantitative PCR assays for cfDNA detection without DNA extraction in exercising SLE patients

    Elmo W. I. Neuberger / Alexandra Brahmer / Tobias Ehlert / Katrin Kluge / Keito F. A. Philippi / Simone C. Boedecker / Julia Weinmann-Menke / Perikles Simon

    Scientific Reports, Vol 11, Iss 1, Pp 1-

    2021  Volume 11

    Abstract: Abstract Circulating cell-free DNA (cfDNA) has been investigated as a screening tool for many diseases. To avoid expensive and time-consuming DNA isolation, direct quantification PCR assays can be established. However, rigorous validation is required to ... ...

    Abstract Abstract Circulating cell-free DNA (cfDNA) has been investigated as a screening tool for many diseases. To avoid expensive and time-consuming DNA isolation, direct quantification PCR assays can be established. However, rigorous validation is required to provide reliable data in the clinical and non-clinical context. Considering the International Organization for Standardization, as well as bioanalytical method validation guidelines, we provide a comprehensive procedure to validate assays for cfDNA quantification from blood plasma without DNA isolation. A 90 and 222 bp assay was validated to study the kinetics of cfDNA after exercise in patients with systemic lupus erythematosus (SLE). The assays showed ultra-low limit of quantification (LOQ) with 0.47 and 0.69 ng/ml, repeatability ≤ 11.6% (95% CI 8.1–20.3), and intermediate precision ≤ 12.1% (95% CI 9.2–17.7). Incurred sample reanalysis confirmed the precision of the procedure. The additional consideration of pre-analytical factors shows that centrifugation speed and temperature do not change cfDNA concentrations. In SLE patients cfDNA increases ~ twofold after a walking exercise, normalizing after 60 min of rest. The established assays allow reliable and cost-efficient quantification of cfDNA in minute amounts of plasma in the clinical setting. Additionally, the assay can be used as a tool to determine the impact of pre-analytical factors and validate cfDNA quantity and quality of isolated samples.
    Keywords Medicine ; R ; Science ; Q
    Subject code 610
    Language English
    Publishing date 2021-06-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article: Influence of Advanced Organ Support (ADVOS) on Cytokine Levels in Patients with Acute-on-Chronic Liver Failure (ACLF).

    Kaps, Leonard / Schleicher, Eva Maria / Medina Montano, Carolina / Bros, Matthias / Gairing, Simon Johannes / Ahlbrand, Constantin Johannes / Michel, Maurice / Klimpke, Pascal / Kremer, Wolfgang Maximilian / Holtz, Stefan / Boedecker-Lips, Simone Cosima / Galle, Peter Robert / Kraus, Daniel / Schattenberg, Jörn M / Labenz, Christian / Weinmann-Menke, Julia

    Journal of clinical medicine

    2022  Volume 11, Issue 10

    Abstract: Background: ADVanced Organ Support (ADVOS) is a novel type of extracorporeal albumin dialysis that supports multiorgan function in patients with acute-on-chronic liver failure (ACLF). No data exist on whether ADVOS affects inflammatory cytokine levels, ... ...

    Abstract Background: ADVanced Organ Support (ADVOS) is a novel type of extracorporeal albumin dialysis that supports multiorgan function in patients with acute-on-chronic liver failure (ACLF). No data exist on whether ADVOS affects inflammatory cytokine levels, which play a relevant role in ACLF. Aim: Our aim was to quantify cytokine levels both before and after a single ADVOS treatment in patients with ACLF at a regular dialysis ward. Methods and results: In this prospective study, 15 patients (60% men) with ACLF and an indication for renal replacement therapy were included. Patient liver function was severely compromised, reflected by a median CLIF-consortium ACLF score of 38 (IQR 35; 40). Blood samples were directly taken before and after ADVOS dialysis. The concentration of cytokines for IL-1β, IFN-α2, IFN-γ, TNF-α, MCP-1, IL-6, IL-8, IL-10, IL-12p70, IL-17A, IL-18, IL-23, IL-33 were quantified via a cytometric bead array. We found no significant (p > 0.05) change in cytokine levels, even when patients were stratified for dialysis time (<480 min versus ≥480 min). The relevance of the assessed cytokines in contributing to systemic inflammation in ACLF was demonstrated by Ingenuity pathway analysis®. Conclusion: Concentrations of pathomechanistically relevant cytokines remained unchanged both before and after ADVOS treatment in patients with ACLF.
    Language English
    Publishing date 2022-05-15
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm11102782
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: A retrospective multicentre cohort study of the performances on attention tests in outpatients with cognitive dysfunctions without delirium

    Grossi, Eleonora / Lucchi, Elena / Kreisel, Stefan H. / Toepper, Max / Boedecker, Sebastian / Inzitari, Marco / Bellelli, Giuseppe / Gentile, Simona / Morandi, Alessandro

    Aging - Clinical and Experimental Research

    2022  Volume 34, Page(s) 39–48

    Abstract: ... might be used to determine the delirium resolution. (c) The Author(s), under exclusive licence to Springer ...

    Title translation Eine retrospektive multizentrische Kohortenstudie zu den Leistungen bei Aufmerksamkeitstests bei ambulanten Patienten mit kognitiven Störungen ohne Delirium. (DeepL)
    Abstract Objective: Attention is the cardinal feature of delirium, but attentional domains may also be affected by dementia and its severity. It is, therefore, of interest to study the correlation between the severity of cognitive impairment in non-delirious patients and different measurements of attentional performance, to identify attention subdomains less affected by severity of cognitive impairment. Methods: Neuropsychological data from non-delirious outpatients (age >= 65 years), presenting at two memory clinics were analysed retrospectively. Scores for selective, divided, and sustained attention were correlated with cognitive impairment as defined by the score of the Mini-Mental State Examination. Results: A total of 1658 outpatients were included. The mean age was 77.15 (+/- 8.17) years, with a mean MMSE score of 22.67 (+/- 4.91). Compared to the type of attention, the tests that are less influenced by the severity of cognitive impairment are those of selective attention, in particular the Digit Span Forward (DSF). Conclusions: This is the first study to correlate deficits in attention subdomains with the degree of cognitive impairment in non-delirious patients. The results suggest that measurements of selective attention (i.e. DSF) might be better suited to discriminate delirium from dementia. Indeed, a lower score on these tests might be indicative of an acute change and worsening of the baseline inattention and a longitudinal monitoring of these changes might be used to determine the delirium resolution. (c) The Author(s), under exclusive licence to Springer Nature Switzerland
    Keywords Ambulante Patientinnen und Patienten ; Attention ; Aufmerksamkeit ; Cognitive Impairment ; Dementia ; Demenz ; Geriatric Patients ; Geriatrische Patientinnen und Patienten ; Kognitive Beeinträchtigung ; Measurement ; Messung ; Neuropsychological Assessment ; Neuropsychologische Messung ; Outpatients ; Selective Attention ; Selektive Aufmerksamkeit
    Language English
    Document type Article
    ZDB-ID 2104785-6
    ISSN 1720-8319 ; 1594-0667
    ISSN (online) 1720-8319
    ISSN 1594-0667
    DOI 10.1007/s40520-021-01891-2
    Database PSYNDEX

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