A systematic review and meta-analysis of effect of vitamin D levels on the incidence of COVID-19
A systematic review and meta-analysis of effect of vitamin D levels on the
A systematic review and meta-analysis of effect of vitamin D levels on the
The Impact of Vitamin D Level on COVID-19 Infection: Systematic Review and Meta-Analysis
Vitamin D deficiency aggravates COVID-19: systematic review and meta-analysis. Take Home Message
Association of Vitamin D Status with SARS-CoV-2 Infection or COVID-19 Severity: A Systematic
Low vitamin D status is associated with coronavirus disease 2019 outcomes: a systematic
Vitamin D supplementation and clinical outcomes in COVID-19: a systematic review and meta-analysis
The role of vitamin D in the age of COVID-19: A systematic review

Low Serum 25-hydroxyvitamin D (Vitamin D) Level Is Associated With Susceptibility to COVID-19,
The link between COVID-19 and Vitamin D (VIVID): A systematic review and meta-analysis.
Influence of 25-hydroxy-cholecalciferol levels on SARS-CoV-2 infection and COVID-19 severity: A systematic review
