The elderly in a period of transition in Sofia.
Petrov
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Bulgaria
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D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000523:psychology*; D001294:Attitude to Health; D002031:Bulgaria; D005260:Female; D005853:Geriatrics; D006801:Humans; D007407:Interviews as Topic; D008297:Male; D008875:Middle Aged; D012924:Social Conditions