9Lagergren J.Adenocarcinoma of oesophagus:what exactly is the size of the problem and who is at risk? [J].Gut,2005,54 Suppl 1:11-15.
10American Gastroenterological Association,Spechler SJ,Sharma P,et al.American Gastroenterological Association medical position statement on the management of Barrett' s esophagus[J].Gastroenterology,2011,140(3):1084-1091.