Asthma emerges as significant problem for elderly.
D000368:Aged; D001249:Asthma / Q000175:diagnosis* / Q000453:epidemiology* / Q000517:prevention & control; D003937:Diagnosis, Differential; D004780:Environment, Controlled; D005260:Female; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D010349:Patient Compliance; D029424:Pulmonary Disease, Chronic Obstructive / Q000175:diagnosis / Q000453:epidemiology / Q000517:prevention & control; D014481:United States / Q000453:epidemiology