1. Univ. Lille, CHU Lille, Department of Oral and Maxillofacial Surgery Lille France
2. Univ. Lille, CHU Lille, Department of Neonatology Lille France
3. Univ. Lille, INSERM, CHU Lille, Department of Oral and Maxillofacial Surgery, U1008, Controlled Drug Delivery Systems and Biomaterials Lille France
4. Université Catholique de Lille Lille France
5. Service de néonatologie Hôpital Saint Vincent de Paul, GHICL Lille France
6. University of Paris, Epidemiology and Statistics Research Center/CRESS, INSERM, INRA Paris France