Vitamin C and D supplementation and the severity of COVID-19: A protocol for systematic review and meta-analysis.
Gislani Acásia da Silva ToscanoIvani Iasmin de AraújoTalita Araújo de SouzaIsabelle Ribeiro Barbosa MirabalGilson de Vasconcelos TorresPublished in: Medicine (2021)
CRD42021255763.
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