1. Halder M, Petsophonsakul P, Akbulut AC, Pavlic A, Bohan F, Anderson E, Maresz K, Kramann R, Schurgers L. Vitamin K: Double Bonds beyond Coagulation Insights into Differences between Vitamin K1 and K2 in Health and Disease. Int J Mol Sci. 2019 Feb 19;20(4):896.
2. Simes DC, Viegas CSB, Araújo N, Marreiros C. Vitamin K as a Diet Supplement with Impact in Human Health: Current Evidence in Age-Related Diseases. Nutrients. 2020 Jan 3;12(1):138.
3. Geleijnse JM1, Vermeer C, Grobbee DE, Schurgers LJ, Knapen MH, van der Meer IM, Hofman A, Witteman JC. Dietary intake of menaquinone is associated with a reduced risk of coronary heart disease: the Rotterdam Study. J Nutr. 2004 Nov;134(11):3100-5.
4. Kaneki M1, Hodges SJ, Hosoi T, Fujiwara S, Lyons A, Crean SJ, Ishida N, et al. Japanese fermented soybean food as the major determinant of the large geographic difference in circulating levels of vitamin K2: possible implications for hip-fracture risk. Nutrition. 2001 Apr;17(4):315-21
5. Kanellakis S, Moschonis G, Tenta R, Schaafsma A, van den Heuvel EG, Papaioannou N, Lyritis G, Manios Y. Changes in parameters of bone metabolism in postmenopausal women following a 12-month intervention period using dairy products enriched with calcium, vitamin D, and phylloquinone (vitamin K(1)) or menaquinone-7 (vitamin K (2)): the Postmenopausal Health Study II. Calcif Tissue Int. 2012 Apr;90(4):251-62. doi: 10.1007/s00223-012-9571-z. Epub 2012 Mar 4.
6. Knapen MH1, Drummen NE, Smit E, Vermeer C, Theuwissen E. Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women. Osteoporos Int. 2013 Sep;24(9):2499-507. doi: 10.1007/s00198-013-2325-6. Epub 2013 Mar 23.
7. Metabolism, endogenous and exogenous sources of vitamin D - Revista Española de Enfermedades Metabólicas Óseas - Vol. 16. Núm. 4 – 2007 - Pág. 63 a 70
8. Prevalence of vitamin D insufficiency in an adult normal population – Chapuy MC, Preziosi P, Maaner M, Arnaud S, Galan P, Hercberg S, et al. – Osteoporos Int. 1997.
9. Vitamina D - Jane Higdon, Ph.D - Linus Pauling Institute Oregon State University – 2004