Cravo, M., Pereira, N., Vigário, A., Ferreira, T., Rego, R., Mendonça, C. and Marques, I. 2021. Impact of Vitamin D Supplementation in a Heart Failure Population. Internal Medicine. 28, 4 (Dec. 2021), 350–356. DOI:https://doi.org/10.24950/rspmi.o.224.4.2021.