First Affiliated Hospital of Naval Medical University (Changhai Hospital), Shanghai, Shanghai, China
Changhai hospital, Shanghai, China
Odense University Hospital, Odense C, Denmark
Qilu Hospital of Shandong University, Jinan, China
Sahlgrenska University Hospital, Gothenburg, Sweden
Centre d'Endoscopie Digestive Hôpital Saint-Antoine, Paris, France
Sheffield Childrens NHS FT, Sheffield, South Yorkshire, United Kingdom
Hospital Mutua de Terrassa, Terrassa, Spain
Hospital Sant Pau, Barcelona, Spain
Hospital clinic of barcelona, Barcelona, Spain