1 Population Health Office, Directorate of Research, Studies, Evaluation and Statistics (DREES), French Ministry of Health and Solidarity, Paris, France.
2 Obstetrical, Perinatal and Paediatric Epidemiology Research Team (EPOPé), Centre of Research in Epidemiology and Statistics, Institut National de la Santé et de la Recherche Médicale, Institut National de la Recherche Agronomique, Université de Paris, Paris, France.
3 Biostatistics and Bioinformatics (DIM), Dijon University Hospital, Dijon, France; Clinical Epidemiology/Clinical Trials Unit, Clinical Investigation Center 1432, Dijon, France.
4 Population Health Office, Directorate of Research, Studies, Evaluation and Statistics (DREES), French Ministry of Health and Solidarity, 14, Ave. Duquesne, 75007 Paris Cedex, Paris; Department of Medical Information (DIM), University Hospital, Nancy, France. Electronic address: Jeanne.FRESSON@sante.gouv.fr.