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