title: Nifedipine treatment of bolus esophageal obstruction.
mesh_terms: D004940:Esophageal Stenosis / Q000188:drug therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009543:Nifedipine / Q000627:therapeutic use*
chemical_list: D009543:Nifedipine