2Lopez P. Castiella A, Montalvo 1,et al. Treatment of achalasia with botulinum toxin. Rev Esp Enferm Dig. 1997,89(5) : 367- 374.
3Kolbasnik J,Waterfall WE,Fachnie B, et al. Long- term efficacy of Botulinurn toxin in classical achalasis: a prospectives tudy. Am J Gastroenterol. 1999,94 (12) : 3434 - 3439.
3P. Alonso,B. Gonzalez-Conde,R. Macenlle,S. Pita,J. L. Vazquez-Iglesias. Achalasia (The Usefulness of Manometry for Evaluation of Treatment)[J] 1999,Digestive Diseases and Sciences(3):536~541