Hariyanto, Timotius Ivan, Claudia Jodhinata, Devina Adella Halim, and Andree Kurniawan. “Viral Hepatitis Is Associated With an Increased Risk of Severe Outcome from Coronavirus Disease 2019 (COVID-19): A Systematic Review and Meta-Analysis”. Gastroenterology and Hepatology from Bed to Bench 15, no. 1 (January 30, 2022). Accessed August 12, 2022. https://journals.sbmu.ac.ir/ghfbb/index.php/ghfbb/article/view/2301.