Heller's radical myotomy in the treatment of achalasia of the oesophagus.
D000818:Animals; D004285:Dogs; D004931:Esophageal Achalasia / Q000601:surgery*; D004947:Esophagus / Q000601:surgery; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged