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  1. Article ; Online: What every orthopaedic surgeon should know about COVID-19

    Colin Shing-Yat Yung / Kevin Chi Him Fok / Ching Ngai Leung / Yat Wa Wong

    Journal of Orthopaedic Surgery, Vol

    A review of the current literature

    2020  Volume 28

    Abstract: The coronavirus (COVID-19) pandemic has severely affected the medical community and stopped the world in its tracks. This review aims to provide the basic information necessary for us, orthopaedic surgeons to prepare ourselves to face this pandemic ... ...

    Abstract The coronavirus (COVID-19) pandemic has severely affected the medical community and stopped the world in its tracks. This review aims to provide the basic information necessary for us, orthopaedic surgeons to prepare ourselves to face this pandemic together. Herein, we cover the background of COVID-19, presentation, investigations, transmission, infection control and touch upon emerging treatments. It is of paramount importance that we should stay vigilant for our patients, our families and ourselves. Adequate infection control measures are necessary during day-to-day clinical work.
    Keywords Orthopedic surgery ; RD701-811 ; covid19
    Language English
    Publishing date 2020-05-01T00:00:00Z
    Publisher SAGE Publishing
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: What every orthopaedic surgeon should know about COVID-19: A review of the current literature.

    Yung, Colin Shing-Yat / Fok, Kevin Chi Him / Leung, Ching Ngai / Wong, Yat Wa

    Journal of orthopaedic surgery (Hong Kong)

    2020  Volume 28, Issue 2, Page(s) 2309499020923499

    Abstract: The coronavirus (COVID-19) pandemic has severely affected the medical community and stopped the world in its tracks. This review aims to provide the basic information necessary for us, orthopaedic surgeons to prepare ourselves to face this pandemic ... ...

    Abstract The coronavirus (COVID-19) pandemic has severely affected the medical community and stopped the world in its tracks. This review aims to provide the basic information necessary for us, orthopaedic surgeons to prepare ourselves to face this pandemic together. Herein, we cover the background of COVID-19, presentation, investigations, transmission, infection control and touch upon emerging treatments. It is of paramount importance that we should stay vigilant for our patients, our families and ourselves. Adequate infection control measures are necessary during day-to-day clinical work.
    MeSH term(s) Betacoronavirus ; COVID-19 ; Coronavirus Infections/diagnosis ; Coronavirus Infections/therapy ; Coronavirus Infections/transmission ; Coronavirus Infections/virology ; Disease Transmission, Infectious/prevention & control ; Humans ; Infection Control/methods ; Orthopedic Surgeons ; Orthopedics/education ; Orthopedics/standards ; Pandemics ; Pneumonia, Viral/diagnosis ; Pneumonia, Viral/therapy ; Pneumonia, Viral/transmission ; Pneumonia, Viral/virology ; SARS-CoV-2
    Keywords covid19
    Language English
    Publishing date 2020-05-13
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 1493368-8
    ISSN 2309-4990 ; 1022-5536
    ISSN (online) 2309-4990
    ISSN 1022-5536
    DOI 10.1177/2309499020923499
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Determination of the ideal plate for medial femoral condyle fracture fixation: an anatomical fit and biomechanical study.

    Leung, Felix / Fang, Christian Xinshuo / Yung, Colin Shing Yat / Leung, Frankie Ka Li

    BMC musculoskeletal disorders

    2024  Volume 25, Issue 1, Page(s) 296

    Abstract: Background: The aim of this study is to determine the best plate to use as a substitute to fix a medial femoral condyle fracture.: Materials and methods: The first part is to measure the best fit between several anatomical plates including the ... ...

    Abstract Background: The aim of this study is to determine the best plate to use as a substitute to fix a medial femoral condyle fracture.
    Materials and methods: The first part is to measure the best fit between several anatomical plates including the Proximal Tibia Anterolateral Plate (PT AL LCP), the Proximal Tibia Medial Plate (PT M LCP), the Distal Tibia Medial Locking Plate (DT M LCP) and the Proximal Humerus (PHILOS) plate against 28 freshly embalmed cadaveric distal femurs. Measurements such as plate offset and number of screws in the condyle and shaft shall be obtained. The subsequent part is to determine the compressive force at which the plate fails. After creating an iatrogenic medial condyle fracture, the cadavers will be fixed with the two plates with the best anatomical fit and subjected to a compression force using a hydraulic press.
    Results: The PT AL LCP offered the best anatomical fit whereas the PHILOS plate offered the maximal number of screws inserted. The force required to create 2 mm of fracture displacement between the two is not statistically significant (LCP 889 N, PHILOS 947 N, p = 0.39). The PT AL LCP can withstand a larger fracture displacement than the PHILOS (LCP 24.4 mm, PHILOS 17.4 mm, p = 0.004).
    Discussion and conclusion: Both the PT AL LCP and the PHILOS remain good options in fixing a medial femoral condyle fracture. Between the two, we would recommend the PT AL LCP as the slightly superior option.
    MeSH term(s) Humans ; Fracture Fixation, Internal ; Fractures, Bone ; Bone Plates ; Epiphyses ; Biomechanical Phenomena ; Knee Fractures
    Language English
    Publishing date 2024-04-16
    Publishing country England
    Document type Journal Article
    ZDB-ID 2041355-5
    ISSN 1471-2474 ; 1471-2474
    ISSN (online) 1471-2474
    ISSN 1471-2474
    DOI 10.1186/s12891-024-07374-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Surgeon-designed patient-specific instrumentation improves glenoid component screw placement for reverse total shoulder arthroplasty in a population with small glenoid dimensions.

    Yung, Colin Shing-Yat / Fang, Christian / Fang, Evan / Siu, Yuk-Chuen / Yee, Dennis King Hang / Wong, Kevin Kwun-Hung / Poon, Kai-Chung / Leung, Matthew Man Fai / Wan, Jonathan / Lau, Tak-Wing / Leung, Frankie

    International orthopaedics

    2023  Volume 47, Issue 5, Page(s) 1267–1275

    Abstract: Purpose: Glenoid component loosening is a potential complication of reverse total shoulder arthroplasty (rTSA), occurring in part due to lack of adequate screw purchase in quality scapular bone stock. This study was to determine the efficacy of a ... ...

    Abstract Purpose: Glenoid component loosening is a potential complication of reverse total shoulder arthroplasty (rTSA), occurring in part due to lack of adequate screw purchase in quality scapular bone stock. This study was to determine the efficacy of a surgeon-designed, 3D-printed patient-specific instrumentation (PSI) compared to conventional instrumentation (CI) in achieving longer superior and inferior screw lengths for glenoid component fixation.
    Methods: A multi-centre retrospective analysis of patients who underwent rTSA between 2015 and 2020. Lengths of the superior and inferior locking screws inserted for fixation of the glenoid baseplate component were recorded and compared according to whether patients received PSI or CI. Secondary outcomes included operative duration and incidence of complications requiring revision surgery.
    Results: Seventy-three patients (31 PSI vs. 42 CI) were analysed. Average glenoid diameter was 24.5 mm (SD: 3.1) and 81% of patients had smaller glenoid dimensions compared to the baseplate itself. PSI produced significantly longer superior (44.7 vs. 30.7 mm; P < 0.001) and inferior (43.0 vs. 31 mm; P < 0.001) mean screw lengths, as compared to CI. A greater proportion of maximal screw lengths for the given rTSA construct (48 mm) were observed in the PSI group (71.9% vs. 11.9% superior, 59.4% vs. 11.9% inferior). Operative duration was not statistically significantly different between the PSI and CI groups (150 min vs. 169 min, respectively; P = 0.229). No patients had radiographic loosening of the glenoid component with an average of 2-year follow-up.
    Conclusion: PSI facilitates longer superior and inferior screw placement in the fixation of the glenoid component for rTSA. With sufficient training, PSI can be designed and implemented by surgeons themselves.
    MeSH term(s) Humans ; Male ; Female ; Middle Aged ; Aged ; Aged, 80 and over ; Arthroplasty, Replacement, Shoulder ; Shoulder Joint/diagnostic imaging ; Shoulder Joint/surgery ; Bone Screws ; Glenoid Cavity/surgery ; Retrospective Studies ; Printing, Three-Dimensional
    Language English
    Publishing date 2023-02-10
    Publishing country Germany
    Document type Comparative Study ; Journal Article ; Multicenter Study ; Research Support, Non-U.S. Gov't
    ZDB-ID 80384-4
    ISSN 1432-5195 ; 0341-2695
    ISSN (online) 1432-5195
    ISSN 0341-2695
    DOI 10.1007/s00264-023-05706-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: The prevalence and impact of cervical spine pathologies in patients with nasopharyngeal carcinoma.

    Yung, Colin Shing-Yat / Leung, Dennis Kwok Chuen / Cheung, Jason Pui Yin

    Oral oncology

    2019  Volume 90, Page(s) 48–53

    Abstract: Objectives: Nasopharyngeal carcinoma (NPC) and its treatment can lead to cervical spine pathologies such as metastases, osteoradionecrosis (ORN) and infection. However, the occurrence rate and relationship between timing of diagnosis and outcomes of the ...

    Abstract Objectives: Nasopharyngeal carcinoma (NPC) and its treatment can lead to cervical spine pathologies such as metastases, osteoradionecrosis (ORN) and infection. However, the occurrence rate and relationship between timing of diagnosis and outcomes of the ever-advancing technology of radiation therapy is largely unknown. Hence, the aim of this study is to determine the prevalence and impact of cervical spine pathologies in patients with NPC.
    Materials and methods: This was a cross-sectional study of all newly diagnosed cases of NPC from 2007 to 2016 at a tertiary referral oncology and spine centre with minimum 1-year post-treatment follow-up. All cervical spine pathologies, their treatment and outcomes were determined. Presentation, onset time and correlations of the cervical spine pathologies with mortality and risk factors were also analysed.
    Results: Out of 605 cases of verified cases of NPC, cervical spine pathologies were seen in 8.9% of patients. New onset neck pain was seen in 5.3%, symptomatic cervical spondylosis in 4.8%, cervical spine metastases in 2.5%, local tumour invasion in 0.8%, cervical ORN in 0.7%, osteomyelitis in 0.7%, radiculopathy in 0.3%, and myelopathy in 0.3%. Cervical spine pathologies were associated with an increased risk (odds ratio: 2.73) in overall mortality. Cervical spine metastases, invasion, ORN and infection were associated with significantly higher risk of mortality (p = 0.01-0.02).
    Conclusion: Cervical spine pathologies in patients with NPC are heterogenous but not uncommon. Neck pain is prevalent but is often benign. ORN and osteomyelitis of the cervical spine is uncommon but have large clinical implications including higher mortality with subtle presentations.
    MeSH term(s) Adolescent ; Adult ; Aged ; Aged, 80 and over ; Cross-Sectional Studies ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Mortality ; Nasopharyngeal Carcinoma/pathology ; Nasopharyngeal Carcinoma/radiotherapy ; Nasopharyngeal Neoplasms/pathology ; Nasopharyngeal Neoplasms/radiotherapy ; Neck Pain/epidemiology ; Neck Pain/etiology ; Osteomyelitis/epidemiology ; Osteomyelitis/etiology ; Osteomyelitis/mortality ; Osteoradionecrosis/epidemiology ; Osteoradionecrosis/etiology ; Osteoradionecrosis/mortality ; Prevalence ; Prospective Studies ; Radiotherapy, Intensity-Modulated/adverse effects ; Spondylosis/epidemiology ; Spondylosis/etiology ; Young Adult
    Language English
    Publishing date 2019-02-01
    Publishing country England
    Document type Journal Article
    ZDB-ID 1120465-5
    ISSN 1879-0593 ; 0964-1955 ; 1368-8375
    ISSN (online) 1879-0593
    ISSN 0964-1955 ; 1368-8375
    DOI 10.1016/j.oraloncology.2019.01.013
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Should nails be locked dynamically or statically in atypical femoral fractures? - A radiological analysis of time to union and reoperations in 236 displaced fractures with 4 years average follow-up.

    Fang, Christian / Shen, Wan Yiu / Wong, Janus Siu Him / Yee, Dennis King-Hang / Yung, Colin Shing-Yat / Fang, Evan / Lai, Yuen Shan / Woo, Siu Bon / Cheung, Jake / Chau, Jackie Yee-Man / Ip, Ka Chun / Li, Wilson / Leung, Frankie

    Injury

    2023  Volume 54, Issue 8, Page(s) 110909

    Abstract: Introduction: Atypical femoral fractures (AFFs) are associated with delayed union and higher reoperation rates. Axial dynamization of intramedullary nails is hypothesized to reduce time-to-union (TTU) and fixation failure as compared to static locking.!# ...

    Abstract Introduction: Atypical femoral fractures (AFFs) are associated with delayed union and higher reoperation rates. Axial dynamization of intramedullary nails is hypothesized to reduce time-to-union (TTU) and fixation failure as compared to static locking.
    Methods: Consecutive acutely displaced AFFs fixed with long intramedullary nails across five centres between 2006 and 2021 with a minimum postoperative follow-up of three months were retrospectively reviewed. The primary outcome was TTU, compared between AFFs treated with dynamically or statically locked intramedullary nails. Fracture union was defined as a modified Radiographic Union Score for Tibial fractures score of 13 or greater. Secondary outcomes involved revision surgery and treatment failure, defined as non-union beyond 18 months or revision internal fixation for mechanical reasons.
    Results: A total of 236 AFFs (127 dynamically locked and 109 statically locked) were analysed with good interobserver reliability of fracture union assessment (intraclass correlation coefficient = 0.89; 95% CI = 0.82-0.98). AFFs treated with dynamized nails had significantly shorter median TTU (10.1 months; 95% CI = 9.24-10.96 vs 13.0 months; 95% CI = 10.60-15.40) (log-rank test, p = 0.019). Multivariate Cox regression revealed that dynamic locking was independently associated with greater likelihood of fracture union within 24 months (p = 0.009). Reoperations were less frequent in the dynamic locking group (18.9% vs 28.4%), although the difference was not statistically significant (p = 0.084). Static locking was an independent risk factor for reoperation (p = 0.049), as were varus reduction and lack of teriparatide use within three months of surgery. Static locking also demonstrated a higher frequency of treatment failure (39.4% vs 22.8%, p = 0.006) and was an independent predictor of treatment failure in logistic regression (p = 0.018). Other factors associated with treatment failure included varus reduction and open reduction.
    Conclusions: Dynamic locking of intramedullary nails in AFFs is associated with faster time to union, lower rate of non-union, and fewer treatment failures.
    MeSH term(s) Humans ; Reoperation ; Follow-Up Studies ; Retrospective Studies ; Treatment Outcome ; Reproducibility of Results ; Bone Nails ; Fracture Fixation, Intramedullary ; Femoral Fractures/diagnostic imaging ; Femoral Fractures/surgery
    Language English
    Publishing date 2023-06-21
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 218778-4
    ISSN 1879-0267 ; 0020-1383
    ISSN (online) 1879-0267
    ISSN 0020-1383
    DOI 10.1016/j.injury.2023.110909
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: What every orthopaedic surgeon should know about COVID-19: A review of the current literature

    Yung, Colin Shing-Yat / Fok, Kevin Chi Him / Leung, Ching Ngai / Wong, Yat Wa

    J Orthop Surg (Hong Kong)

    Abstract: The coronavirus (COVID-19) pandemic has severely affected the medical community and stopped the world in its tracks. This review aims to provide the basic information necessary for us, orthopaedic surgeons to prepare ourselves to face this pandemic ... ...

    Abstract The coronavirus (COVID-19) pandemic has severely affected the medical community and stopped the world in its tracks. This review aims to provide the basic information necessary for us, orthopaedic surgeons to prepare ourselves to face this pandemic together. Herein, we cover the background of COVID-19, presentation, investigations, transmission, infection control and touch upon emerging treatments. It is of paramount importance that we should stay vigilant for our patients, our families and ourselves. Adequate infection control measures are necessary during day-to-day clinical work.
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #32406305
    Database COVID19

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  8. Article ; Online: What every orthopaedic surgeon should know about COVID-19

    Yung, Colin Shing-Yat / Fok, Kevin Chi Him / Leung, Ching Ngai / Wong, Yat Wa

    Journal of Orthopaedic Surgery

    A review of the current literature

    2020  Volume 28, Issue 2, Page(s) 230949902092349

    Abstract: The coronavirus (COVID-19) pandemic has severely affected the medical community and stopped the world in its tracks. This review aims to provide the basic information necessary for us, orthopaedic surgeons to prepare ourselves to face this pandemic ... ...

    Abstract The coronavirus (COVID-19) pandemic has severely affected the medical community and stopped the world in its tracks. This review aims to provide the basic information necessary for us, orthopaedic surgeons to prepare ourselves to face this pandemic together. Herein, we cover the background of COVID-19, presentation, investigations, transmission, infection control and touch upon emerging treatments. It is of paramount importance that we should stay vigilant for our patients, our families and ourselves. Adequate infection control measures are necessary during day-to-day clinical work.
    Keywords Surgery ; covid19
    Language English
    Publisher SAGE Publications
    Publishing country us
    Document type Article ; Online
    ZDB-ID 2128854-9
    ISSN 2309-4990 ; 1022-5536
    ISSN (online) 2309-4990
    ISSN 1022-5536
    DOI 10.1177/2309499020923499
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Unicompartmental knee arthroplasties in Hong Kong: 15 years of experience in a teaching hospital.

    Yung, Colin Shing-Yat / Cheung, Man Hong / Fu, Henry Chun Him / Chan, Ping Keung / Yan, Chun Hoi / Chiu, Kwong Yuen

    Journal of orthopaedic surgery (Hong Kong)

    2018  Volume 27, Issue 2, Page(s) 2309499019850364

    Abstract: Introduction: Osteoarthritis (OA) of the knee is a growing problem in an aging population. Unicompartmental knee arthroplasties (UKA) have been used for management of isolated OA of the medial tibiofemoral joint. This is the first study on the usage of ... ...

    Abstract Introduction: Osteoarthritis (OA) of the knee is a growing problem in an aging population. Unicompartmental knee arthroplasties (UKA) have been used for management of isolated OA of the medial tibiofemoral joint. This is the first study on the usage of UKA in Hong Kong.
    Methods: Retrospective analysis of all patients undergoing medial compartment UKA in a tertiary referral center since 2003. Preoperative and postoperative International Knee Society Knee Scores (KSKS) and Knee Societal Functional Assessment (KSFA) scores, range of motion, flexion deformity, and lower limb mechanical alignment were measured. Statistical analysis using paired sample t-tests was performed. Revision operations, rate of revisions, and causes of failure were analyzed. Univariate and multivariate logistic regression analyses of risk factors for revision operation were performed against patient demographics, type of prosthesis, postoperative alignment, and degree of correction.
    Results: There were 94 UKA performed with an average follow-up of 4.3 years (range: 0.5-15.2 years). The KSKS and KSFA scores improved from 54.5 and 54.0 to 85.6 and 64.5 ( p < 0.01), respectively. There was no significant improvement in the range of motion ( p = 0.87) and fixed flexion deformity ( p = 0.14). Mechanical alignment improved from 172.1° to 174.9° varus postoperatively ( p < 0.01). Six cases required revision operation with a revision rate of 1.50 per 100 observed component years. Causes of revision included two cases of tibial tray loosening and one case each of progressive OA, mechanical failure, persistent pain, and infection. Logistic regression analysis for risk factors showed no statistical significance.
    Conclusions: UKA offers good functional improvement but further long-term studies are required to evaluate survivorship.
    MeSH term(s) Aged ; Aged, 80 and over ; Arthroplasty, Replacement, Knee/methods ; Female ; Follow-Up Studies ; Forecasting ; Hong Kong/epidemiology ; Hospitals, Teaching ; Humans ; Incidence ; Knee Joint/diagnostic imaging ; Knee Joint/physiopathology ; Knee Joint/surgery ; Male ; Middle Aged ; Osteoarthritis, Knee/diagnosis ; Osteoarthritis, Knee/epidemiology ; Osteoarthritis, Knee/surgery ; Postoperative Period ; Radiography ; Range of Motion, Articular ; Retrospective Studies ; Treatment Outcome
    Language English
    Publishing date 2018-08-21
    Publishing country England
    Document type Journal Article ; Multicenter Study
    ZDB-ID 1493368-8
    ISSN 2309-4990 ; 1022-5536
    ISSN (online) 2309-4990
    ISSN 1022-5536
    DOI 10.1177/2309499019850364
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Operative management of midshaft clavicle fractures demonstrates better long-term outcomes

    Michael Zhipeng Yan / Wing-Sze Yuen / Sung-Ching Yeung / Christie Wong Wing-Yin / Sonia Choi-Ying Wong / Walter Wang Si-Qi / Elaine Tian / Shireen Rashed / Colin Shing Yat Yung / Christian Xinshuo Fang

    PLoS ONE, Vol 17, Iss 4, p e

    A systematic review and meta-analysis of randomised controlled trials.

    2022  Volume 0267861

    Abstract: Introduction Midshaft clavicular fractures are common amongst young adults. Conservative or surgical treatment for definitive fracture management has been widely debate, both with their pros and cons. Previous meta-analyses compared the clinical outcomes ...

    Abstract Introduction Midshaft clavicular fractures are common amongst young adults. Conservative or surgical treatment for definitive fracture management has been widely debate, both with their pros and cons. Previous meta-analyses compared the clinical outcomes between conservative and surgical treatment options of midshaft clavicular fractures but failed to elucidate any difference in functional improvement. We postulate that functional improvement after fracture union plateaus and the clinical outcome after treatment varies at different time points. This meta-analysis will focus on the synthesis comparison of outcomes at early, short-term results (3 months), intermediate-term (6 to 12 months) and long-term (>24 months) clinical outcomes. Methods A systematic search was done on databases (Pubmed, Embase, Medline, Cochrane) in June 2021. Search keywords were: midshaft clavicular fractures and clinical trials. Clinical trials fulfilling the inclusion criteria were selected for comparison and the clinical outcomes of midshaft clavicular fractures using surgical and non-surgical interventions in terms of improvement in the Disabilities of the Arm, Shoulder and Hand (DASH) score, Constant-Murley Score (CMS), time to union and risk ratio of treatment related complications were analysed in correlation with post-treatment timeframe. Results Of the 3094 patients of mean age 36.7 years in the 31 selected studies, surgical intervention was associated with improved DASH score (standard-mean difference SMD -0.22, 95% CI -0.36 to -0.07, p = 0.003; mean difference MD -1.72, 95% CI -2.93 to -0.51, p = 0.005), CMS (SMD 0.44, 95% CI 0.17-0.72, p = 0.001; MD 3.64, 95% CI 1.09 to 6.19, p = 0.005), time to union (non-adjusted SMD -2.83, 95% CI -4.59 to -1.07, p = 0.002; adjusted SMD -0.69, 95% CI -0.97 to -0.41, p<0.001) and risk ratio of bone-related complications including bone non-union, malunion and implant failure (0.21, 95% CI 0.1 to 0.42; p<0.001). Subgroup analysis based on time period after treatment showed that surgical ...
    Keywords Medicine ; R ; Science ; Q
    Subject code 616
    Language English
    Publishing date 2022-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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