References

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Bischoff-Ferrari et al, fall prevention with supplemental and active forms of vitamin D: a meta-analysis of randomised controlled trials. BMJ_2009
Heaney Robert P. et al. Vitamin D3 is More Potent Than Vitamin D2 in Humans. J Clin Endocrinol Metab, March 2011, 96(3):E447-E452
Hoogendijk W, Lips P, Dik M, Deeg D, Beekman A, Penninx B; Depression Is Associated With Decreased 25-Hydroxivitamin D and Increased Parathyroid Hormone Levels in Older Adults, ARCH GEN PSYCHIATRY/VOL 65 (NO. 5), MAY 2008
Hyppönen et al, intake of vitamin D and risk of type 1 diabetes a birth-cohort study. Lancet 2001, 358: 1500-03
Mulligan ML, Felton SK, Riek AE, et al. Implications of Vitamin D deficiency in pregnancy and lactation. Am J Obstet Gynecol 2010; 202:429.e1-9
Laaksi et al. Vitamin D supplementation for the prevention of acute respiratory tract infection : a randomized, double-blinded trial among young Finnish men. J Infect Dis. 2010; 202: 809-14
Tolppanen A-M, Sayers A, Fraser W, Lewis G, Zammit S, Lawlor D; The Association of serum 25-hydroxivitamin D3 and D2 with depressive symptoms in childhood – a prospective cohort study, Journal of Child Psychology and Psychiatry 2011, doi: 10.1111/j.1469-7610.2011.02518.x
Van Schoor Natasja M. et al Worldwide vitamin D status. Best Practise & Research Clinical Endocrinology & Metabolisim 25 (2011) 671-680
Viljakainen et al. Wintertime Vitamin D supplementation inhibits seasonal variation of calcitropic hormones and maintains Bone turnover in healthy men. J Bone Miner Res 2009;24:346-352
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http://www.efsa.europa.eu/en/efsajournal/doc/2813.pdf