Pneumatic dilation versus laparoscopic Heller's myotomy for idiopathic achalasia.

G.E. Boeckxstaens^*, V. Annese, S.B. des Varannes, S. Chaussade, M. Costantini, A. Cuttitta, J.I. Elizalde, U. Fumagalli, M. Gaudric, W.O. Rohof, A.J. Smout, J. Tack, A.H. Zwinderman, G. Zaninotto, O.R. Busch, (incl. A. Masclee) European Achalasia Trial Investigators