1. Basel Institute for Clinical Epidemiology and Biostatistics, University Hospital of Basel, Basel, Switzerland
2. Cochrane Switzerland, Institute of Social and Preventive Medicine (IUMSP), Lausanne University Hospital, Lausanne, Switzerland
3. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada14Department of Medicine, McMaster University, Hamilton, Ontario, Canada
4. German Cochrane Centre, Institute of Medical Biometry and Medical Informatics, Freiburg University Medical Center, Freiburg, Germany
5. Institute of Social and Preventive Medicine, University of Zurich, Zurich, Switzerland
6. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada15Department of Urology, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
7. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada16Department of Internal Medicine, Pontificia Universidad Catolica de Chile, Santiago
8. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada25Evidence-Based Dentistry Unit, Faculty of Dentistry, Universidad de Chile, Santiago
9. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada17Department of Family Medicine, McMaster University, Hamilton, Ontario, Canada
10. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada
11. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada26Michael G. DeGroote Institute for Infectious Diseases Research, McMaster University, Hamilton, Ontario, Canada
12. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada18Department of Internal Medicine, American University of Beirut, Beirut, Lebanon19Department of Medicine, State University of New York at Buffalo, Buffal
13. Center for Pediatric Clinical Studies, Department of Neonatology, University Children’s Hospital, Tuebingen, Germany
14. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada20Department of Anesthesia, McMaster University, Hamilton, Ontario, Canada27Michael G. DeGroote Institute for Pain Research and Care, McMaster University,
15. Epidemiology Unit, Department of Cardiology, Vall d’Hebron Hospital and CIBER de Epidemiología y Salud Publica (CIBERESP), Barcelona, Spain
16. Centre de Recherche Clinique Étienne-Le Bel and Department of Medicine, Université de Sherbrooke, Sherbrooke, Canada
17. Basel Institute for Clinical Epidemiology and Biostatistics, University Hospital of Basel, Basel, Switzerland13Institute of Nuclear Medicine, University Hospital Bern, Bern, Switzerland
18. IRCCS Orthopedic Institute Galeazzi, Milano, Italy
19. Department of Surgery, University Hospital Basel, Basel, Switzerland
20. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada20Department of Anesthesia, McMaster University, Hamilton, Ontario, Canada21Stanford Prevention Research Center, Stanford University, Stanford, California
21. Basel Institute for Clinical Epidemiology and Biostatistics, University Hospital of Basel, Basel, Switzerland22Academy of Swiss Insurance Medicine, University Hospital of Basel, Basel, Switzerland
22. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada23Chinese Evidence-Based Medicine Center, West China Hospital, Sichuan University, Chengdu, China
23. Department of Medicine, Innlandet Hospital Trust-Division Gjøvik, Oppland, Norway
24. Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada12Department of Anesthesia and Pain Medicine, Hospital for Sick Children, Toronto, Ontario, Canada24Institute of Health Policy, Management and Evaluation,
25. Institute of Nuclear Medicine, University Hospital Bern, Bern, Switzerland
26. Basel Institute for Clinical Epidemiology and Biostatistics, University Hospital of Basel, Basel, Switzerland3Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada