6Dubuc J, Legoxu J, Winnock M, et al. Endoscopic screening for esoph- ageal squamous-cell carcinoma in high-risk patients: a prospective study conducted in 62 French endoscopy centers [ J ]. Endoscopy, 2006,38 (7) :690-695.
7Shimizu Y, Omori T, Yokoyama A, et al. Endoscopic diagnosis of early squamous neoplasia of the esophagus with iodine staining: high-grade intra-epithelial neoplasia turns pink within a few minutes [ J ]. J Gas- troenterol Hepatol,2008,23 (4) :546-550.
8Wasielica-Berger J, Baniukiewicz A, Wroblewski E et al. Magnification endoscopy and chromoendoseopy in evaluation of specialized intestinal metaplasia in Barrett "s Esophagus [ J ]. Dig Dis Sci, 2011,56 ( 7 ) : 1987-1995.
9Espino A, Cirocco M, Daeosta R, et al. Advanced imaging technologies for the detection of dysplasia and early cancer in barrett esophagus [ J ]. Clin Endosc ,2014,47 ( 1 ) :47-54.
10Peng G, Long Q, Wu Y, et al. Evaluation of double vital staining with lugolg iodine and methylene blue in diagnosing superficial esophageal lesions[J]. Scand J Gastroentero1,2011,46(4) :406-413.
