[An investigation on high altitude heart disease].
D000222:Adaptation, Physiological; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000531:Altitude; D000532:Altitude Sickness / Q000453:epidemiology*; D002648:Child; D002675:Child, Preschool; D002681:China; D006331:Heart Diseases / Q000209:etiology*; D006801:Humans; D000860:Hypoxia / Q000453:epidemiology*; D007223:Infant