Vitamin D Supplementation in Older Persons: Guidelines Versus Practice.
J Am Med Dir Assoc. 2018 Dec 19. pii: S1525-8610(18)30633-9. doi: 10.1016/j.jamda.2018.11.001.
Veleva BI1, Caljouw MAA2, van der Steen JT2, Chel VGM2, Numans ME2.
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