1. Service de Néonatologie, Centre Hospitalier Universitaire Sud Réunion, Saint-Pierre, France;
2. Centre d’Etudes Périnatales Océan Indien (CEPOI), Centre Hospitalier Universitaire Sud Réunion, Saint-Pierre, France;
3. Department of Epidemiology, School of Public Health, West Virginia University, Morgantown, WV, USA;
4. Service de Gynécologie et Obstétrique, Centre Hospitalier Universitaire Sud Réunion, Saint-Pierre, France;
5. Department of Obstetrics & Gynaecology, University of Adelaide, Robinson Institute, Lyell McEwin Hospital, Elizabeth Vale, Australia