Pulmonary diseases of the aged.
D000368:Aged; D000375:Aging; D006801:Humans; D008171:Lung Diseases / Q000503:physiopathology*; D008173:Lung Diseases, Obstructive / Q000503:physiopathology; D011014:Pneumonia / Q000503:physiopathology; D013290:Streptococcal Infections; D014376:Tuberculosis / Q000503:physiopathology