1. Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Reference Center for Congenital and Malformative Esophageal Disorders, Jeanne de Flandre Children's Hospital, Lille University Faculty of Medicine, Lille, France
2. Department of Pediatric Surgery, Reference Center for Congenital and Malformative Esophageal Disorders, Jeanne de Flandre Children's Hospital, Lille University Faculty of Medicine, Lille, France
3. Department of Biostatistics, Jeanne de Flandre Children's Hospital, Lille University Faculty of Medicine, Lille, France
4. Department of Pediatric Surgery, University Hospital of Strasbourg, Strasbourg, France