1. Department of Public Health; Clermont-Ferrand University Hospital Center; Clermont-Ferrand EA France
2. PEPRADE; University of Auvergne; Clermont-Ferrand France
3. AUDIPOG Sentinel Network; medical university RTH Laennec; Lyon France
4. Department of Obstetrics & Gynecology; Clermont-Ferrand University Hospital Center; Clermont-Ferrand France
5. Department of Public Health; Department of Obstetrics & Gynecology; Clermont-Ferrand University Hospital Center; Clermont-Ferrand EA France
6. PEPRADE; University of Auvergne; Clermont-Ferrand; AUDIPOG Sentinel Network; medical university RTH Laennec; Lyon France