Schwartz JB et al. 2016; Response of vitamin D concentration to vitamin D3 administration in older adults without sun exposure: A randomized double-blind trial; J. Am. Geriatr. Soc. 64(1):65-72
Study design: Randomized double-blind investigation to evaluate the 25 OHD levels in elderly nursing home residents after 16 weeks when 800, 2 000 or 4 000 IU/day or 50 000 … » Mehr