- European Network of. Gastrointestinal Pathology (ENGIP)
- European Society of Pathology (ESP)
- International Agency for Research on Cancer (IARC)
- The International Academy of Pathology (IAP)
- United States & Canadian Academy of Pathology (USCAP)
- United European Gastroenterology (UEG)
- European Society of Gastrointestinal Endoscopy (ESGE)
- European Microscopic Colitis Group (EMCG)
- World Organization for Specialized Studies on Diseases of the Esophagus (OESO)
- The International Society for Diseases of the Esophagus (ISDE)
- International Gastric Cancer Association (IGCA)
- European Helicobacter Study Group (EHSG)
- European Association for the Study of the Liver (EASL)
- Web Microscope (Web-based Virtual Microscopy)
- Rodger C. Haggitt Gastrointestinal Pathology Society
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