1. The vitamin D deficiency pandemic: approaches for diagnosis, treatment and prevention;Holick;Rev Endocr Metab Disord,2017
2. Ultraviolet B radiation: the vitamin D connection;Holick;Adv Exp Med Biol,2017
3. Vitamin D efficacy and safety;Heaney;Arch Intern Med,2011
4. Vitamin D and health in the Mediterranean countries;Grant;Hormones (Athens),2018
5. Sunlight, ultraviolet radiation, vitamin D and skin cancer: how much sunlight do we need?;Holick;Adv Exp Med Biol,2014