1Pediatric Infectious Disease Unit, Division of General Pediatrics, Department of Pediatrics, Children's Hospital, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland;
2Crohn's and Colitis Center, Gastroenterology Beaulieu SA, Lausanne, Switzerland;
3Service of Gastroenterology and Hepatology, Department of Medicine, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland;
4Gastroenterology Service, Department of Medical Specialities, Geneva University Hospitals, Geneva, Switzerland;
5Service of Gastroenterology, Clinic of Visceral Surgery and Medicine, Bern University Hospital, Bern, Switzerland;
6Service of Gastroenterology, Hôpital Cantonal, Sion, Switzerland;
7Departments of Pathology-Immunology and Pediatrics, Centre for Vaccinology, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.
Correspondence: Klara M. Posfay-Barbe, MD, MS. E-mail: [email protected].
SUPPLEMENTARY MATERIAL accompanies this paper at https://links.lww.com/AJG/A406