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  1. Article ; Online: Renal Doppler in the management of the acute kidney injury in intensive care unit.

    Dewitte, Antoine

    Journal of critical care

    2013  Volume 28, Issue 3, Page(s) 314

    MeSH term(s) Acute Kidney Injury/diagnostic imaging ; Humans ; Intensive Care Units ; Prognosis ; Ultrasonography, Doppler ; Urea/urine
    Chemical Substances Urea (8W8T17847W)
    Language English
    Publishing date 2013-06
    Publishing country United States
    Document type Letter
    ZDB-ID 632818-0
    ISSN 1557-8615 ; 0883-9441
    ISSN (online) 1557-8615
    ISSN 0883-9441
    DOI 10.1016/j.jcrc.2013.01.003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Insuffisance rénale aiguë en soins intensifs-réanimation et ses conséquences : mise au point.

    Orieux, Arthur / Boyer, Alexandre / Dewitte, Antoine / Combe, Christian / Rubin, Sébastien

    Nephrologie & therapeutique

    2021  Volume 18, Issue 1, Page(s) 7–20

    Abstract: Acute kidney injury is a common complication in intensive care unit. Its incidence is variable according to the studies. It is considered to occur in more than 50 % of patients. Acute kidney injury is responsible for an increase in morbidity (length of ... ...

    Title translation Acute kidney injury in intensive care unit: A review.
    Abstract Acute kidney injury is a common complication in intensive care unit. Its incidence is variable according to the studies. It is considered to occur in more than 50 % of patients. Acute kidney injury is responsible for an increase in morbidity (length of hospitalization, renal replacement therapy) but also for excess mortality. The commonly accepted definition of acute kidney injury comes from the collaborative workgroup named Kidney Disease: Improving Global Outcomes (KDIGO). It made it possible to standardize practices and raise awareness among practitioners about monitoring plasma creatinine and also diuresis. Acute kidney injury in intensive care unit is a systemic disease including circulatory, endothelial, epithelial and cellular function involvement and an acute kidney injury is not accompanied by ad integrum repair. After prolonged injury, inadequate repair begins with a fibrotic process. Several mechanisms are involved (cell cycle arrest, epithelial-mesenchymal transition, mitochondrial dysfunction) and result in improper repair. A continuum exists between acute kidney disease and chronic kidney disease, characterized by different renal recovery phenotypes. Thus, preventive measures to prevent the occurrence of kidney damage play a major role in management. The nephrologist must be involved at every stage, from the prevention of the first acute kidney injury (upon arrival in intensive care unit) to long-term follow-up and the care of a chronic kidney disease.
    MeSH term(s) Acute Kidney Injury/diagnosis ; Acute Kidney Injury/epidemiology ; Acute Kidney Injury/etiology ; Humans ; Incidence ; Intensive Care Units ; Kidney Function Tests ; Renal Replacement Therapy ; Retrospective Studies
    Language French
    Publishing date 2021-12-03
    Publishing country France
    Document type Journal Article ; Review
    ZDB-ID 2229575-6
    ISSN 1872-9177 ; 1769-7255
    ISSN (online) 1872-9177
    ISSN 1769-7255
    DOI 10.1016/j.nephro.2021.07.324
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Impact of dexamethasone in severe COVID-19-induced acute kidney injury: a multicenter cohort study.

    Rubin, Sébastien / Orieux, Arthur / Prezelin-Reydit, Mathilde / Garric, Antoine / Picard, Yoann / Mellati, Nouchan / Le Gall, Lisa / Dewitte, Antoine / Prevel, Renaud / Gruson, Didier / Louis, Guillaume / Boyer, Alexandre

    Annals of intensive care

    2024  Volume 14, Issue 1, Page(s) 26

    Abstract: Background: Acute kidney injury (AKI) in intensive care unit (ICU) patients with severe COVID-19 is common (> 50%). A specific inflammatory process has been suggested in the pathogenesis of AKI, which could be improved by dexamethasone (DXM). In a small ...

    Abstract Background: Acute kidney injury (AKI) in intensive care unit (ICU) patients with severe COVID-19 is common (> 50%). A specific inflammatory process has been suggested in the pathogenesis of AKI, which could be improved by dexamethasone (DXM). In a small monocenter study (n = 100 patients), we reported a potential protective effect of DXM on the risk of AKI. This study aimed to investigate the preventive impact of DXM on AKI in a multicenter study of patients with severe COVID-19.
    Methods: We conducted a multicenter study in three French ICUs from March 2020 to August 2021. All patients admitted to ICU for severe COVID-19 were included. Individuals with preexistent AKI or DXM administration before admission to ICU were excluded. While never used during the first wave, DXM was used subsequently at ICU entry, providing two treatment groups. Multivariate Cause-specific Cox models taking into account changes in ICU practices over time, were utilized to determine the association between DXM and occurrence of AKI.
    Results: Seven hundred and ninety-eight patients were included. Mean age was 62.6 ± 12.1 years, 402/798 (50%) patients had hypertension, and 46/798 (6%) had previous chronic kidney disease. Median SOFA was 4 [3-6] and 420/798 (53%) required invasive mechanical ventilation. ICU mortality was 208/798 (26%). AKI was present in 598/798 (75%) patients: 266/598 (38%), 163/598 (27%), and 210/598 (35%) had, respectively, AKI KDIGO 1, 2, 3, and 61/598 (10%) patients required renal replacement therapy. Patients receiving DXM had a significantly decreased hazard of AKI occurrence compared to patients without DXM (HR 0.67; 95CI 0.55-0.81). These results were consistent in analyses that (1) excluded patients with DXM administration to AKI onset delay of less than 12 h, (2) incorporating the different 'waves' of the COVID-19 pandemic.
    Conclusions: DXM was associated with a decrease in the risk of AKI in severe COVID-19 patients admitted to ICU. This supports the hypothesis that the inflammatory injury of AKI may be preventable.
    Language English
    Publishing date 2024-02-13
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2617094-2
    ISSN 2110-5820
    ISSN 2110-5820
    DOI 10.1186/s13613-024-01258-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Impaired balance between neutrophil extracellular trap formation and degradation by DNases in COVID-19 disease.

    Garcia, Geoffrey / Labrouche-Colomer, Sylvie / Duvignaud, Alexandre / Clequin, Etienne / Dussiau, Charles / Trégouët, David-Alexandre / Malvy, Denis / Prevel, Renaud / Zouine, Atika / Pellegrin, Isabelle / Goret, Julien / Mamani-Matsuda, Maria / Dewitte, Antoine / James, Chloe

    Journal of translational medicine

    2024  Volume 22, Issue 1, Page(s) 246

    Abstract: Background: Thrombo-inflammation and neutrophil extracellular traps (NETs) are exacerbated in severe cases of COVID-19, potentially contributing to disease exacerbation. However, the mechanisms underpinning this dysregulation remain elusive. We ... ...

    Abstract Background: Thrombo-inflammation and neutrophil extracellular traps (NETs) are exacerbated in severe cases of COVID-19, potentially contributing to disease exacerbation. However, the mechanisms underpinning this dysregulation remain elusive. We hypothesised that lower DNase activity may be associated with higher NETosis and clinical worsening in patients with COVID-19.
    Methods: Biological samples were obtained from hospitalized patients (15 severe, 37 critical at sampling) and 93 non-severe ambulatory cases. Our aims were to compare NET biomarkers, functional DNase levels, and explore mechanisms driving any imbalance concerning disease severity.
    Results: Functional DNase levels were diminished in the most severe patients, paralleling an imbalance between NET markers and DNase activity. DNase1 antigen levels were higher in ambulatory cases but lower in severe patients. DNase1L3 antigen levels remained consistent across subgroups, not rising alongside NET markers. DNASE1 polymorphisms correlated with reduced DNase1 antigen levels. Moreover, a quantitative deficiency in plasmacytoid dendritic cells (pDCs), which primarily express DNase1L3, was observed in critical patients. Analysis of public single-cell RNAseq data revealed reduced DNase1L3 expression in pDCs from severe COVID-19 patient.
    Conclusion: Severe and critical COVID-19 cases exhibited an imbalance between NET and DNase functional activity and quantity. Early identification of NETosis imbalance could guide targeted therapies against thrombo-inflammation in COVID-19-related sepsis, such as DNase administration, to avert clinical deterioration.
    Trial registration: COVERAGE trial (NCT04356495) and COLCOV19-BX study (NCT04332016).
    MeSH term(s) Humans ; Extracellular Traps/metabolism ; Neutrophils/metabolism ; Deoxyribonucleases/metabolism ; COVID-19 ; Deoxyribonuclease I/metabolism ; Inflammation/metabolism ; Nervous System Diseases
    Chemical Substances Deoxyribonucleases (EC 3.1.-) ; Deoxyribonuclease I (EC 3.1.21.1)
    Language English
    Publishing date 2024-03-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 2118570-0
    ISSN 1479-5876 ; 1479-5876
    ISSN (online) 1479-5876
    ISSN 1479-5876
    DOI 10.1186/s12967-024-05044-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: CD154 Induces Interleukin-6 Secretion by Kidney Tubular Epithelial Cells under Hypoxic Conditions: Inhibition by Chloroquine.

    Dewitte, Antoine / Villeneuve, Julien / Lepreux, Sébastien / Bouchecareilh, Marion / Gauthereau, Xavier / Rigothier, Claire / Combe, Christian / Ouattara, Alexandre / Ripoche, Jean

    Mediators of inflammation

    2020  Volume 2020, Page(s) 6357046

    Abstract: Inflammation is a major contributor to tubular epithelium injury in kidney disorders, and the involvement of blood platelets in driving inflammation is increasingly stressed. CD154, the ligand of CD40, is one of the mediators supporting platelet ... ...

    Abstract Inflammation is a major contributor to tubular epithelium injury in kidney disorders, and the involvement of blood platelets in driving inflammation is increasingly stressed. CD154, the ligand of CD40, is one of the mediators supporting platelet proinflammatory properties. Although hypoxia is an essential constituent of the inflammatory reaction, if and how platelets and CD154 regulate inflammation in hypoxic conditions remain unclear. Here, we studied the control by CD154 of the proinflammatory cytokine interleukin- (IL-) 6 secretion in short-term oxygen (O
    MeSH term(s) Apoptosis ; Blotting, Western ; CD40 Ligand/pharmacology ; Cell Hypoxia/physiology ; Cell Line ; Cell Proliferation ; Cell Survival ; Chloroquine/pharmacology ; Enzyme-Linked Immunosorbent Assay ; Epithelial Cells/drug effects ; Epithelial Cells/metabolism ; Flow Cytometry ; Humans ; Interleukin-6/metabolism ; Kidney Tubules/cytology ; Microscopy, Fluorescence ; Real-Time Polymerase Chain Reaction
    Chemical Substances Interleukin-6 ; CD40 Ligand (147205-72-9) ; Chloroquine (886U3H6UFF)
    Language English
    Publishing date 2020-01-31
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1137605-3
    ISSN 1466-1861 ; 0962-9351
    ISSN (online) 1466-1861
    ISSN 0962-9351
    DOI 10.1155/2020/6357046
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Correction to: Blood platelets and sepsis pathophysiology: A new therapeutic prospect in critically ill patients?

    Dewitte, Antoine / Lepreux, Sébastien / Villeneuve, Julien / Rigothier, Claire / Combe, Christian / Ouattara, Alexandre / Ripoche, Jean

    Annals of intensive care

    2018  Volume 8, Issue 1, Page(s) 32

    Abstract: Upon publication of the original article [1], it was noticed that the title was incorrect. Instead of 'critical', it should read 'critically', and therefore, the correct title should be. ...

    Abstract Upon publication of the original article [1], it was noticed that the title was incorrect. Instead of 'critical', it should read 'critically', and therefore, the correct title should be.
    Language English
    Publishing date 2018-02-28
    Publishing country Germany
    Document type Journal Article ; Published Erratum
    ZDB-ID 2617094-2
    ISSN 2110-5820
    ISSN 2110-5820
    DOI 10.1186/s13613-018-0378-6
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  7. Article ; Online: Plasma Markers of Neutrophil Extracellular Trap Are Linked to Survival but Not to Pulmonary Embolism in COVID-19-Related ARDS Patients.

    Prével, Renaud / Dupont, Annabelle / Labrouche-Colomer, Sylvie / Garcia, Geoffrey / Dewitte, Antoine / Rauch, Antoine / Goutay, Julien / Caplan, Morgan / Jozefowicz, Elsa / Lanoix, Jean-Philippe / Poissy, Julien / Rivière, Etienne / Orieux, Arthur / Malvy, Denis / Gruson, Didier / Garçon, Loic / Susen, Sophie / James, Chloé

    Frontiers in immunology

    2022  Volume 13, Page(s) 851497

    Abstract: Introduction: Coronavirus disease 2019 (COVID-19) can cause life-threatening acute respiratory distress syndrome (ARDS). Recent data suggest a role for neutrophil extracellular traps (NETs) in COVID-19-related lung damage partly due to microthrombus ... ...

    Abstract Introduction: Coronavirus disease 2019 (COVID-19) can cause life-threatening acute respiratory distress syndrome (ARDS). Recent data suggest a role for neutrophil extracellular traps (NETs) in COVID-19-related lung damage partly due to microthrombus formation. Besides, pulmonary embolism (PE) is frequent in severe COVID-19 patients, suggesting that immunothrombosis could also be responsible for increased PE occurrence in these patients. Here, we evaluate whether plasma levels of NET markers measured shorty after admission of hospitalized COVID-19 patients are associated with clinical outcomes in terms of clinical worsening, survival, and PE occurrence.
    Patients and methods: Ninety-six hospitalized COVID-19 patients were included, 50 with ARDS (severe disease) and 46 with moderate disease. We collected plasma early after admission and measured 3 NET markers: total DNA, myeloperoxidase (MPO)-DNA complexes, and citrullinated histone H3. Comparisons between survivors and non-survivors and patients developing PE and those not developing PE were assessed by Mann-Whitney test.
    Results: Analysis in the whole population of hospitalized COVID-19 patients revealed increased circulating biomarkers of NETs in patients who will die from COVID-19 and in patients who will subsequently develop PE. Restriction of our analysis in the most severe patients, i.e., the ones who enter the hospital for COVID-19-related ARDS, confirmed the link between NET biomarker levels and survival but not PE occurrence.
    Conclusion: Our results strongly reinforce the hypothesis that NETosis is an attractive therapeutic target to prevent COVID-19 progression but that it does not seem to be linked to PE occurrence in patients hospitalized with COVID-19.
    MeSH term(s) Biomarkers ; COVID-19/complications ; Extracellular Traps ; Humans ; Pulmonary Embolism/etiology ; Respiratory Distress Syndrome/etiology
    Chemical Substances Biomarkers
    Language English
    Publishing date 2022-03-17
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2022.851497
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  8. Article ; Online: Serum lactate and acute mesenteric ischaemia: An observational, controlled multicentre study.

    Collange, Olivier / Lopez, Marc / Lejay, Anne / Pessaux, Patrick / Ouattara, Alexandre / Dewitte, Antoine / Rimmele, Thomas / Girardot, Thibaut / Arnaudovski, Darko / Augustin, Pascal / Chakfe, Nabil / Tacquard, Charles / Oulehri, Walid / Zieleskiewicz, Laurent / Severac, François / Leone, Marc / Mertes, Paul Michel

    Anaesthesia, critical care & pain medicine

    2022  Volume 41, Issue 6, Page(s) 101141

    Abstract: Background: Early diagnosis and prompt management of acute mesenteric ischaemia (AMI) are key to survival but remain extremely difficult, due to vague and non-specific symptoms. Serum lactate (SL) is commonly presented as a useful biomarker for the ... ...

    Abstract Background: Early diagnosis and prompt management of acute mesenteric ischaemia (AMI) are key to survival but remain extremely difficult, due to vague and non-specific symptoms. Serum lactate (SL) is commonly presented as a useful biomarker for the diagnosis or prognosis of AMI. The aim of our study was test SL (1) as a diagnostic marker and (2) as a prognostic marker for AMI.
    Study design: This was an ancillary multicentre case-control study. Patients with AMI at intensive care unit (ICU) admission were included (AMI group) and matched to ICU patients without AMI (control group). SL was measured and compared on day 0 (D0) and day 1 (D1). Diagnosis and prognosis accuracy were assessed by receiver operating characteristic (ROC) and their area under the curve (AUC).
    Results: Each group consisted of 137 matched ICU patients. There was no significant difference of SL between the two groups at D0 or at D1 (p = 0.26 and p = 0.29 respectively). SL was a poor marker of AMI: at D0 and D1, AUC were respectively 0.57 [0.51; 0.63] and 0.60 [0.53; 0.67]. SL at D0 and D1 correctly predicted ICU mortality, independently of AMI (AUC D0: 0.69 [0.59; 0.79] vs. 0.74 [0.65; 0.82]; p = 0.51 and D1: 0.74 [0.64; 0.84] vs. 0.76 [0.66; 0.87]; p = 0.77, respectively, for control and AMI groups].
    Conclusions: SL has no specific link with AMI, both for diagnosis and prognosis. SL should not be used for the diagnosis of AMI but, despite its lack of specificity, it may help to assess severity.
    MeSH term(s) Humans ; Mesenteric Ischemia/diagnosis ; Case-Control Studies ; Retrospective Studies ; Intensive Care Units ; ROC Curve ; Prognosis ; Biomarkers ; Lactates
    Chemical Substances Biomarkers ; Lactates
    Language English
    Publishing date 2022-08-12
    Publishing country France
    Document type Observational Study ; Multicenter Study ; Journal Article
    ISSN 2352-5568
    ISSN (online) 2352-5568
    DOI 10.1016/j.accpm.2022.101141
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  9. Article ; Online: Amino acids and vitamins status during continuous renal replacement therapy: An ancillary prospective observational study of a randomised control trial.

    Schneider, Antoine G / Picard, Walter / Honoré, Patrick M / Dewitte, Antoine / Mesli, Samir / Redonnet-Vernhet, Isabelle / Fleureau, Catherine / Ouattara, Alexandre / Berger, Mette M / Joannes-Boyau, Olivier

    Anaesthesia, critical care & pain medicine

    2021  Volume 40, Issue 2, Page(s) 100813

    Abstract: Background: Continuous renal replacement therapy (CRRT) is associated with micronutrients loss. Current recommendations are to administer 1-1.5g/kg/day of proteins during CRRT. We aim to evaluate the net effect of CRRT on amino acids (AA), vitamins A ... ...

    Abstract Background: Continuous renal replacement therapy (CRRT) is associated with micronutrients loss. Current recommendations are to administer 1-1.5g/kg/day of proteins during CRRT. We aim to evaluate the net effect of CRRT on amino acids (AA), vitamins A and C (Vit A, Vit C) levels.
    Methods: This is a prospective observational study embedded within a randomised controlled trial comparing two CRRT doses in patients with septic shock. CRRT was provided in continuous veno-venous haemofiltration mode at a dose of either 35ml/kg/h or 70ml/kg/h. All patients received parenteral nutrition with standard trace elements and vitamins (protein intake 1g/kg/d). We measured serum levels of glutamine, valine and alanine as well as Vit A and Vit C upon randomisation, study day four and eight. In addition, we measured a larger panel of AA in a subset of 11 patients.
    Results: We included 30 patients (17 allocated to 70ml/kg/h and 13 to 35ml/kg/h CRRT). Before CRRT initiation, mean plasma levels of glutamine and valine, Vit A and Vit C were low. CRRT was not associated with any significant change in AA levels except for a decrease in cystein. It was associated with an increase in Vit A and a decrease in Vit C levels. CRRT dose had no impact on those nutrients blood levels.
    Conclusions: Irrespective of dose, CRRT was associated with a decrease in cysteine and Vit C and an increase in Vit A with no significant change in other AA. Further studies should focus on lean mass wasting during CRRT.
    MeSH term(s) Acute Kidney Injury ; Amino Acids ; Continuous Renal Replacement Therapy ; Critical Illness ; Humans ; Prospective Studies ; Renal Replacement Therapy ; Vitamins
    Chemical Substances Amino Acids ; Vitamins
    Language English
    Publishing date 2021-02-12
    Publishing country France
    Document type Journal Article ; Observational Study ; Randomized Controlled Trial ; Research Support, Non-U.S. Gov't
    ISSN 2352-5568
    ISSN (online) 2352-5568
    DOI 10.1016/j.accpm.2021.100813
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  10. Article: High mean arterial pressure target to improve sepsis-associated acute kidney injury in patients with prior hypertension: a feasibility study.

    Dewitte, Antoine / Labat, Aurore / Duvignaud, Pierre-Antoine / Bouche, Gauthier / Joannes-Boyau, Olivier / Ripoche, Jean / Hilbert, Gilles / Gruson, Didier / Rubin, Sébastien / Ouattara, Alexandre / Boyer, Alexandre / Combe, Christian

    Annals of intensive care

    2021  Volume 11, Issue 1, Page(s) 139

    Abstract: Background: The optimal mean arterial pressure (MAP) in cases of septic shock is still a matter of debate in patients with prior hypertension. An MAP between 75 and 85 mmHg can improve glomerular filtration rate (GFR) but its effect on tubular function ... ...

    Abstract Background: The optimal mean arterial pressure (MAP) in cases of septic shock is still a matter of debate in patients with prior hypertension. An MAP between 75 and 85 mmHg can improve glomerular filtration rate (GFR) but its effect on tubular function is unknown. We assessed the effects of high MAP level on glomerular and tubular renal function in two intensive care units of a teaching hospital. Inclusion criteria were patients with a history of chronic hypertension and developing AKI in the first 24 h of septic shock. Data were collected during two 6 h periods of MAP regimen administered consecutively after haemodynamic stabilisation in an order depending on the patient's admission unit: a high-target period (80-85 mmHg) and a low-target period (65-70 mmHg). The primary endpoint was the creatinine clearance (CrCl) calculated from urine and serum samples at the end of each MAP period by the UV/P formula.
    Results: 26 patients were included. Higher urine output (+0.2 (95%:0, 0.4) mL/kg/h; P = 0.04), urine sodium (+6 (95% CI 0.2, 13) mmol/L; P = 0.04) and lower serum creatinine (- 10 (95% CI - 17, - 3) µmol/L; P = 0.03) were observed during the high-MAP period as compared to the low-MAP period, resulting in a higher CrCl (+25 (95% CI 11, 39) mL/mn; P = 0.002). The urine creatinine, urine-plasma creatinine ratio, urine osmolality, fractional excretion of sodium and urea showed no significant variation. The KDIGO stage at inclusion only interacted with serum creatinine variation and low level of sodium excretion at inclusion did not interact with these results.
    Conclusions: In the early stage of sepsis-associated AKI, a high-MAP target in patients with a history of hypertension was associated with a higher CrCl, but did not affect the kidneys' ability to concentrate urine, which may reflect no effect on tubular function.
    Language English
    Publishing date 2021-09-22
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2617094-2
    ISSN 2110-5820
    ISSN 2110-5820
    DOI 10.1186/s13613-021-00925-2
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