[Geriatric care in the United States. 4. Current status of geriatric care via geriatric centers: regional care extended from the centers].
D000368:Aged; D005853:Geriatrics; D006299:Health Services for the Aged / Q000458:organization & administration*; D006801:Humans; D012041:Regional Medical Programs / Q000458:organization & administration*; D014481:United States