LUMC (NL) The Netherlands

University of Naples, Federico II (IT) Italy

Hospital Universitario Infantil "La Paz" (ES) Spain

Hospital Infantil Universitario “La Fe” (ES) Spain

Hospital Universitari de Sant Joan de Reus (ES) Spain

Akademia Medyczna w Warszawie (PL) Polska

Klinika za djea je bolesti Zagreb (HR) Croatie

Heim Pál Gyermekkórház Coeliakia Centrum (HU) Magyarországon

Meyer Children's Hospital of Haifa (IL) Israel

Umea University Sweden

University of Oslo (NO) Norway

Klinikum der Universitet Munchen (D) Deutschland