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2. Gastritis and Its Consequences;Faber, K.,1935
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4. The distribution of intestinal metaplasia in macroscopic specimen, demonstrated by a histochemical method;Graham, R. I.; Schade, R. 0. K;Acta path. microbiol. scand,1965
5. Combined gastroscopy and gastric biopsy under direct vision;Hancock, P.E.T.; Shiner, M.;Lancet,1958