1. Cochrane France; Paris France
2. Centre d'Épidémiologie Clinique, AP-HP (Assistance Publique des Hôpitaux de Paris), Hôpital Hôtel Dieu; Paris France
3. Université de Paris, Centre of Research in Epidemiology and Statistics (CRESS), INSERM, F-75004; Paris France
4. Cochrane Germany; Cochrane Germany Foundation; Freiburg Germany
5. Institute for Evidence in Medicine (for Cochrane Germany Foundation); Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg; Freiburg Germany
6. Cochrane Response; Cochrane; London UK
7. Centre for Evidence-Based Medicine Odense (CEBMO) and Cochrane Denmark; Department of Clinical Research, University of Southern Denmark; Odense Denmark
8. Open Patient data Explorative Network (OPEN); Odense University Hospital; Odense Denmark
9. Epistemonikos Foundation; Santiago Chile
10. HRB-Trials Methodology Research Network; National University of Ireland Galway; Galway Ireland
11. Evidence Synthesis Ireland and Cochrane Ireland; Galway Ireland
12. UC Evidence Center, Cochrane Chile Associated Center; Pontificia Universidad Católica de Chile; Santiago Chile
13. Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico; University of Milan; Milan Italy
14. Department of Anesthesia, Intensive Care and Emergency; Ospedale Maggiore Policlinico, University of Milan; Milan Italy
15. Department of Pathophysiology and Transplantation; Ospedale Maggiore Policlinico, University of Milan; Milan Italy