Effect of High-Dose Zinc and Ascorbic Acid Supplementation vs Usual Care on Symptom Length and Reduction Among Ambulatory Patients With SARS-CoV-2 Infection: The COVID A to Z Randomized Clinical Trial.
JAMA Netw Open. 2021 Feb 1;4(2):e210369. doi: 10.1001/jamanetworkopen.2021.0369.
JAMA Netw Open. 2021.
PMID: 33576820
Free PMC article.
Clinical Trial.