Vitamin D deficiency in the free-living elderly.
R
R
Ghose
D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D012307:Risk Factors; D012621:Seasons; D013472:Sunlight; D014808:Vitamin D Deficiency / Q000453:epidemiology* / Q000209:etiology