[1] Biomedical Research Institute Sant Pau (IIB Sant Pau),Department of Pediatrics, Obstetrics, Gynaecology and Preventive Medicine
[2] Universidad Autónoma de Barcelona,Knowledge and Evaluation Research Unit, Department of Medicine
[3] Mayo Clinic,Department of Health Research Methods, Evidence and Impact
[4] Cytel Inc,Division of Health Care Delivery Research
[5] McMaster University,Evaluation Unit (SESCS)
[6] Mayo Clinic,Network for Research On Chronicity
[7] Canary Islands Health Service (SCS),Centre for Health Economics and Policy Analysis
[8] Research Network On Health Services in Chronic Diseases (REDISSEC),Department of Obstetrics and Gynecology
[9] Primary Care,Faculty of Medicine
[10] and Health Promotion (RICAPPS),Division of General Internal Medicine and Center for Clinical Effectiveness
[11] McMaster University,Department of Medicine
[12] Ramón y Cajal Hospital,Clinical Epidemiology and Cancer Screening
[13] Alcalá de Henares University, CIBER of Epidemiology and Public Health
[14] University of Cincinnati School of Medicine,undefined
[15] McMaster University,undefined
[16] Corporació Sanitaria Parc Taulí,undefined
[17] CIBERESP,undefined