1Guelrud M, Herrera I, Essenfeld H, et al. Intestinal metaplasia of the gastric cardia:a prospective study with enhanced magnification endoscopy. Am J Gastroentero1,2002 ,97 :584-589.
2Endo T, Awakawa T, Takahashi T, et al. Classification of Barrett's epithelium by magnifying endoscopy. Gastrointest Endosc, 2002,55:641-647.
3Yagi K, Nakamura A, Sekine A, et al. Comparison between magnifying endoscopy and histological, culture and urease test findings from the gastric mucosa of the corpus. Endoscopy,2002,34:376-381.