Befon A, Katoulis AC, Georgala S, et al. Serum Total 25-Hydroxyvitamin D Levels in Patients With Cutaneous Malignant Melanoma: A Case-Control Study in a Low-Risk Southern European Population. Dermatol Pract Concept. Published online December 31, 2019:e2020010. doi:10.5826/dpc.1001a10