• American Association for the Study of Liver Diseases (AASL)
• American college of Gastroenterology (ACG)
• American Gastroenterological Association (AGA)
• American Society for Gastrointestinal Endoscopy (ASGE)
• Deutsche Gesellschaft für Verdauungs/SW-Krankheiten
• European Association for the Study of the Liver (EASL)
• Flemish Society for Gastroenterology (VVGE)