1. Prenatal Care Center (PMI); Montpellier France
2. Department of Gynecology and Obstetrics; CHRU de Montpellier; Montpellier France
3. Department of Statistics; EA2415; IURC; Montpellier and CHU Nîmes; France
4. Laboratory of Virology; CHRU de Montpellier; Montpellier France
5. INSERM U1058; Faculty of Pharmacy; Montpellier France
6. Department of Biopathology; CHRU de Montpellier; Montpellier France
7. IRCM; INSERM U896; Val d'Aurelle; Montpellier France