Complications of illness in geriatric patients in hospital.
D000368:Aged; D002318:Cardiovascular Diseases / Q000453:epidemiology; D050723:Fractures, Bone / Q000453:epidemiology; D005853:Geriatrics; D006760:Hospitalization; D006801:Humans; D009422:Nervous System Diseases / Q000453:epidemiology; D012140:Respiratory Tract Diseases / Q000453:epidemiology