Lopes , Monyck Jeane dos Santos. “Can Vitamin B12 Be an Adjuvant to COVID-19 Treatment?”. GSC Biological and Pharmaceutical Sciences 11, no. 3 (June 30, 2020): 01–05. Accessed August 25, 2024. https://gsconlinepress.com/journals/index.php/gscbps/article/view/gscbps-2020-0155.