Respiratory problems in developing countries.
Fischer
Gilberto Bueno
GB
D000367:Age Factors; D002648:Child; D003906:Developing Countries / Q000706:statistics & numerical data*; D006801:Humans; D012140:Respiratory Tract Diseases / Q000175:diagnosis / Q000453:epidemiology* / Q000628:therapy*; D012307:Risk Factors