3Warren S, Gates O. Multiple primary malignant tumors:a survey of the literature and a sastistical study [ J ]. Am J Cancer, 1932,16 : 1358-1414.
4Moertel C G, Dockerty M B, Baggenstoss A H. Multiple primary malignant neoplasma. Ⅱ. Tumors of different tissues or organs[ J]. Cancer, 1961,14:231-237.
5Izumi Y, Inoue H, Kawano T, et al. Endosonography during EMR to enchance its safety :a new technique[J]. Surg Endosc, 1999, 13(4):358-360.
6Endo K, Kawamoto K, Baba H, et al. Endoscopic mucosal resection for early cardia cancer by minimum laparotomy[J]. Am J Surg , 2003, 185(3) :285-287 .
7Takeo Y, Yoshida T, Shigemitu T, et al. Endoscopic mucosal resection for early esophageal cancer and esophageal dysplasia[J]. Hepatogastroenterology, 2001, 48(38) :453-457.
8Giovannini M, Bernardini D, Moutardier V, et al. Endoscopic mucosal resection(EMR): results and prognostic factors in 21 patients[J]. Endoscopy, 1999, 31(9) :698-701.
9Yamamoto H, Yube T, Isoda N, et al. A novel method of endoscopic mucusal resection using sodium hyaluronate [ J ]. Gastrointest Endosc,1999 , 50(2) :251-256.
6Wang L D,Zhou Q,Gou R Y,et al.Reproducibility of an esophageal biopsy sampling procedure in a high-incidence area for esophageal cancer in northern China[J].Cancer Epidemiol Biomarkers Prey,1996,5(5):405-406.
8Nakao M, Yoshida S, Tanaka S, et al. Optical biopsy of early gas- troesophageal cancer by catheter-based reflectance-type laser- scanning confocal microscopy [ J ]. J Biomedi Potics, 2008, 13:54043.
9Inoue M, Miyake Y, Odaka T, et al. Objective evaluation of visi- bility in virtual chromoendoscopy for esophageal squamous carci- noma using a color difference formula [ J ] . J Biomedi Potics, 2010, 15:56019-56021.
