1. Department of Obstetrics and Gynecology; Montpellier France
2. Department of Obstetrics and Gynecology; Nimes University Hospital Center; Nîmes France
3. Department of Pediatric Surgery; CHU Montpellier, Hôpital Lapeyronie; Montpellier France
4. Department of Pediatric Radiology; CHU Montpellier, Hôpital Lapeyronie; Montpellier France
5. Inserm, CESP Centre for Research in Epidemiology and Population Health, U1018, Reproduction and child development; Villejuif France