Setyarini, Indah Bachti, Nurul Ratna, dan Ninik Mudjihartini. 2021. “Vitamin D and COVID-19: Insight on Mechanism and Implementation in Equatorial Countries”. Majalah Kedokteran Indonesia 71 (2), 61-64. https://doi.org/10.47830/jinma-vol.71.2-2021-354.