Affiliation: | Pediatric Gastroenterology Unit, Department of Pediatrics, University of Lausanne, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland;Hemato-Oncology Unit, Department of Pediatrics, University of Lausanne, Switzerland;Department of Pediatrics, Centre Hospitalier du Valais Romand, Sion, Switzerland;Department of Pediatrics, Centre Hospitalier des Pays de Morlaix, France |