1. Hôpital Hôtel-Dieu; French Cochrane Center; 1 place du Parvis Notre-Dame Paris France 75004
2. Hôpital Hôtel-Dieu; Centre d'Epidémiologie Clinique; 1, place du Parvis Notre-Dame Paris France 75004
3. Georges Pompidou European Hospital, Paris Descartes University, INSERM U872 eq20; Medical Informatics Department; Paris France
4. Barts and the London Medical School; Centre for Health Sciences; Abernethy Building London UK E1 2AT
5. Lausanne University Hospital; Cochrane Switzerland, Institute of Social and Preventive Medicine; Biopôle 2 Route de la Corniche 10 Lausanne Switzerland 1010
6. Georges Pompidou European Hospital, Paris Descartes University, INSERM U872 eq 22; Department of Public Health and Medical Informatics; 20 rue Leblanc Paris France 75015