From the Departments of Ear, Nose, and Throat Surgery, Burn Plastic Surgery, Gynaecology and Obstetrics, Plastic Surgery, and Research and Innovation and the Methodology and Biostatistics Unit, Nantes University Hospital; the Clinical Research Department, District Hospital Center; EA 4275 Biostatistics, Pharmacoepidemiology and Human Sciences Research Unit, and SPHERE, UMR INSERM U1246, Faculty of Medicine, University of Nantes; and the French School of Public Health.