1. Achalasia: current evaluation and therapy;Ferguson;Ann Thorac Surg,1991
2. Graded pneumatic dilation using Rigiflex achalasia dilators in patients with primary esophageal achalasia;Kadakia;Am J Gastroenterol,1993
3. Treatment of achalasia: the best of both worlds;Abid;Am J Gastroenterol,1994
4. Pneumatic dilation for achalasia without fluoroscopic guidance: safety and efficacy;Lambroza;Am J Gastroenterol,1995
5. Pneumatic dilatation or esophagomyotomy treatment for idiopathic achalasia: clinical outcomes and cost analysis;Parkman;Dig Dis Sci,1993