Etiology and incidence of chronic cor-pulmonale in state of Bihar.
D001991:Bronchitis / Q000150:complications; D002908:Chronic Disease; D006801:Humans; D007194:India; D008297:Male; D011656:Pulmonary Emphysema / Q000150:complications; D011660:Pulmonary Heart Disease / Q000453:epidemiology* / Q000209:etiology*