University of Bologna, Bologna, Italy
Assuta Medical Center, Tel Aviv, Israel
IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
The Loginov Moscow Clinical Scientific Centre, Moscow, Balaschiha, Russian Federation
A.S. Loginov Moscow Clinical Scientific Center, Moscow, Russian Federation
University of Medicine and Pharmacy „Grigore T Popa”, Iasi, Romania, Iasi, Romania
University of Bologna, Imola, Italy
Zagazig University, Zagazig, Egypt
Università Degli Studi Di Brescia, Brescia, Italy
Dept. Of Traslational Medicine, Pisa, Italy
Sheikh Russel Gastroliver Institute and Hospital, Dhaka, Bangladesh
Hospital Universitario Parc Taulí, Sabadell, Spain
Institut de Recerca Vall d`Hebron, Barcelona, Spain
Hospital General Vall d’Hebrón, Barcelona, Spain
Ege University Dept of Gastroenterology Ege Reflux Study Group, Izmir, Turkey
Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
Clinic for Gastroenterology, Belgrade, Serbia
Clinic of Gastroenterohepatology, Skopje, North Macedonia
Iuliu Hatieganu University of Medicine and Pharmacy Cluj-Napoca, Cluj-Napoca, Romania
University of Modena and Reggio Emilia, Modena, Italy
Sahlgrenska University Hospital - Dept of Internal Medicine, Sahlgrenska University Hospital ; Gothe, Gothenburg, Sweden
Institute of medicine, Gothenburg, Sweden
Sahlgrenska Universitetssjukhuset, Gothenburg, Sweden
Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
Medsi, Krasnogorsk, Russian Federation
Modena Hospital, Modena, Italy
University Hospital Vall d'Hebron, Barcelona, Spain
Luigi Sacco University Hospital Gastroenterology Unit Biomed and Clinical Sciences, Milan, Italy
University of Ferrara, Ferarra, Italy
Vita-Salute San Raffaele University - IRCCS San Raffaele Scientific Institute, Milan, Italy
University of Bari Medical School, Bari, Italy
IRCCS Policlinico S. Matteo, Pavia, Italy
University of Parma, Parma, Italy
University of Cyprus, Nicosia, Cyprus
Universiti Sains Malaysia, Kota Bharu, Malaysia