The Association between Vitamin D and Zinc Status and the Progression of Clinical Symptoms among Outpatients Infected with SARS-CoV-2 and Potentially Non-Infected Participants: A Cross-Sectional Study
Golabi et al., Nutrients, doi:10.3390/nu13103368 (preprint 8/26/2021)
https://c19early.org/golabi2.html