1. To dilate or operate? That is the question;Vantrappen, G.; Janssens, J.;Gut,1983
2. Treatment ofachalasia and related motor disorders;Vantrappen, G.; Hellemans, J.;Gastroenterology,1980
3. Heller's myotomy for achalasia: is an added antireflux procedure necessary? BrJ';Andreollo, N.A.; Earlam, R.J.;Surg,1987
4. Late results of a prospective randomised study comparing forceful dilatation and oesophagomyotomy in patients with achalasia;Csendes, A.; Braghetto, I.; Henriquez, A.; Cortes, C.,1989