title: Study of cardiopulmonary function on exposure to high altitude. I. Acute acclimatization to an altitude of 3,5000 to 4,000 meters in relation to altitude sickness and cardiopulmonary function.
mesh_terms: D000064:Acclimatization; D000328:Adult; D000367:Age Factors; D000531:Altitude; D001794:Blood Pressure; D003080:Cold Temperature; D006321:Heart / Q000503:physiopathology*; D006326:Heart Auscultation; D006801:Humans; D000860:Hypoxia / Q000150:complications / Q000503:physiopathology*; D008168:Lung / Q000503:physiopathology*; D008173:Lung Diseases, Obstructive / Q000150:complications / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D012123:Pulmonary Ventilation; D011674:Pulse; D013997:Time Factors