Benefits of standard dose and pulse dose vitamin D in the high-risk and confirmed hypovitaminosis D population with COVID-19: an Evidence-Based Case Report (EBCR) - Beatrice Paulus, Ivana; Aryana, I Gusti Putu; Wahyu Purnamasidhi, Cokorda Agung; Daniella, Dian (Family Medicine & Primary Care Review, 2022)