A, A., JA, C., GS, M., & GC, M. (2007). Vitamin D supplementation to prevent infections: A sub-study of a randomised placebo-controlled trial in older people (RECORD trial, ISRCTN 51647438). Age & Ageing, 36(5), 574. https://doi.org/10.1093/ageing/afm091
Chicago Style (17th ed.) CitationA, Avenell, Cook JA, Maclennan GS, and Macpherson GC. "Vitamin D Supplementation to Prevent Infections: A Sub-study of a Randomised Placebo-controlled Trial in Older People (RECORD Trial, ISRCTN 51647438)." Age & Ageing 36, no. 5 (2007): 574. https://doi.org/10.1093/ageing/afm091.
MLA (9th ed.) CitationA, Avenell, et al. "Vitamin D Supplementation to Prevent Infections: A Sub-study of a Randomised Placebo-controlled Trial in Older People (RECORD Trial, ISRCTN 51647438)." Age & Ageing, vol. 36, no. 5, 2007, p. 574, https://doi.org/10.1093/ageing/afm091.