[Problems in preserving the health of the elderly].
D000368:Aged; D005260:Female; D006299:Health Services for the Aged / Q000458:organization & administration*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012423:Rural Health; D014586:USSR
Voprosy sokhraneniia zdorov'ia pozhilykh liudeĭ.