Rakotosaona, Rianasoambolanoro, et al. “Efficacy and Safety of CVO PLUS CURATIF Capsules, Malagasy Improved Traditional Medication for Treating COVID-19: A Randomized, Double- Blind, Placebo-Controlled Trial”. Archives of Clinical and Biomedical Research, vol. 6, no. 5, Oct. 2022, pp. 817-25, https://fortunejournals.org/ojs/index.php/acbr/article/view/14962.