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Mapped gastric biopsies were obtained from 316 dyspeptic adults aged less than 41 years from 8 geographic areas that differed in gastric cancer risk. Gastric atrophy was assessed according to internationally validated criteria. Gastritis stage was established according to the OLGA staging system. The most prevalent gastritis stages were 0 to II, which included all subjects entered from Chile, Germany, India, Italy, and Thailand. Gastritis Stages III and IV were limited to the Chinese and Korean populations. Indians had a high prevalence of H pylori infection without high-stage gastritis. In populations at different cancer risk, the gastritis OLGA stage mirrored the gastric cancer incidence. Gastritis staging identifies a subgroup of higher-risk patients.<\/jats:p>","DOI":"10.1177\/1066896907307238","type":"journal-article","created":{"date-parts":[[2008,4,16]],"date-time":"2008-04-16T12:20:29Z","timestamp":1208348429000},"page":"150-154","source":"Crossref","is-referenced-by-count":31,"title":["OLGA Gastritis Staging in Young Adults and Country-Specific Gastric Cancer Risk"],"prefix":"10.1177","volume":"16","author":[{"given":"Massimo","family":"Rugge","sequence":"first","affiliation":[{"name":"Veneto Institute of Oncology, IRCCS Padova, Pathology Unit, Italy, Department of Medicine, Veterans Affairs Medical Center and Baylor College of Medicine Houston, Texas, Department of Internal Medicine, Digestive Disease Division, Guro Hospital, Korea University College of Medicine, Seoul, South Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jong G.","family":"Kim","sequence":"additional","affiliation":[{"name":"Gastroenterology Unit, Department of Medicine, 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