5Raiss M,Hrora A,Menfaa M,et al.Heller's myotomy without fundoplieation:a series of 123 patients[J].Ann Chir,2002,127(10):771-775.
6Cortesini C,Cianchi F,Pucciani F.Long-term results of Heller myotomy without an antireflux procedure in achalasic patients[J].Chir Ital,2002,54(5):581-586.
7Lyass S,Thoman D,Steiner J P,et al.Current status of an antireflux procedure in laparoscopie Heller myotomy[J].Surg Endose,2003,17(4):554-558.
8MONTAZERI G, NOURI N, ESTAKHRI S, et al. Lower oesophageal sphincter pressure and timed barium oesophagogram: two objective parameters in the non-invasive assessment of primary achalasia [J]. Alimentary Pharmacology and Therapeutics, 2005, 22: 26.
9DEVIERE J, DUNHAM F, RICKAERT F, et al. Endoscopic uhrasonography in achalasia [J] . Gastroenterology, 1989, 96: 1210-1213.
10BOROTYO E, GAUDRIC M, DANEL B, et al. Risk facters of esophageal perforation during pneumatic dilation for achalasia[J]. Gut, 1996, 9: 9-12.