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Sattar, N.; Welsh, P.; Panarelli, M.; Forouhi, N. G. (2012). "Increasing requests for vitamin D measurement: Costly, confusing, and without credibility". The Lancet379 (9811): 95–96. PMID22243814. doi:10.1016/S0140-6736(11)61816-3.
Kimball; et al. (2004). "Safety of vitamin D3 in adults with multiple sclerosis". J Clin Endocrinol Metab86 (3): 645–51. PMID17823429. doi:10.1093/ajcn/86.3.645.
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Durup, D.; Jørgensen, H. L.; Christensen, J.; Schwarz, P.; Heegaard, A. M.; Lind, B. (May 9, 2012). "A Reverse J-Shaped Association of All-Cause Mortality with Serum 25-Hydroxyvitamin D in General Practice: The CopD Study". The Journal of Clinical Endocrinology & Metabolism (Endocrine Society) 97 (8): 2644–2652. PMID22573406. doi:10.1210/jc.2012-1176.
Holick, MF; Deluca, HF; Avioli, LV (1972). "Isolation and identification of 25-hydroxycholecalciferol from human plasma". Archives of Internal Medicine129 (1): 56–61. PMID4332591. doi:10.1001/archinte.1972.00320010060005.
Sattar, N.; Welsh, P.; Panarelli, M.; Forouhi, N. G. (2012). "Increasing requests for vitamin D measurement: Costly, confusing, and without credibility". The Lancet379 (9811): 95–96. PMID22243814. doi:10.1016/S0140-6736(11)61816-3.
Kimball; et al. (2004). "Safety of vitamin D3 in adults with multiple sclerosis". J Clin Endocrinol Metab86 (3): 645–51. PMID17823429. doi:10.1093/ajcn/86.3.645.
Wactawski-Wende, J; Kotchen, JM, Women's Health Initiative Investigators (Mar 9, 2006). "Calcium plus vitamin D supplementation and the risk of colorectal cancer.". N Engl J Med354 (7): 684–96. PMID16481636. doi:10.1056/NEJMoa055222.
Durup, D.; Jørgensen, H. L.; Christensen, J.; Schwarz, P.; Heegaard, A. M.; Lind, B. (May 9, 2012). "A Reverse J-Shaped Association of All-Cause Mortality with Serum 25-Hydroxyvitamin D in General Practice: The CopD Study". The Journal of Clinical Endocrinology & Metabolism (Endocrine Society) 97 (8): 2644–2652. PMID22573406. doi:10.1210/jc.2012-1176.
Holick, MF; Deluca, HF; Avioli, LV (1972). "Isolation and identification of 25-hydroxycholecalciferol from human plasma". Archives of Internal Medicine129 (1): 56–61. PMID4332591. doi:10.1001/archinte.1972.00320010060005.