Megaesophagus, megacolon, and Changes' disease in Chile.
D014355:Chagas Disease; D002677:Chile; D004931:Esophageal Achalasia; D004947:Esophagus; D006801:Humans; D008531:Megacolon; D014352:Trypanosomiasis; D014481:United States
ESOPHAGUS; MEGACOLON; TRYPANOSOMIASIS, SOUTH AMERICAN