TY - JOUR AN - 12 AU - Eckardt,V.F. AU - Aignherr,C. AU - Bernhard,G. TI - Predictors of outcome in patients with achalasia treated by pneumatic dilatation. JO - Gastroenterology PY - 1992 VL - 103 SP - 732-738 M2 - 732 ER -