Al-Daghri et al., Journal of Translational Medicine,
doi:10.1186/s12967-021-02838-x (Peer Reviewed)
Vitamin D status of Arab Gulf residents screened for SARS-CoV-2 and its association with COVID-19 infection: a multi-centre case–control study
Case control study with 220 adults showing significantly lower vitamin D levels in PCR+ patients.
Al-Daghri et al., 4/26/2021, peer-reviewed, 13 authors.