7Calabrese C, Di Febo G, Brandi G , et al. Correlation between endoscopic features of gastric antrum ,histology and Helicobacter pylori infection in adults. Ital J Gastroenterol Hepatol,1999,31:359-365.
8Patricia A. Belair,David C. Metz,Douglas O. Faigel,Emma E. Furth. Receiver Operator Characteristic Analysis of Endoscopy as a Test for Gastritis[J] 1997,Digestive Diseases and Sciences(11):2227~2233