Hariyanto, T. I., C. Jodhinata, D. A. Halim, and A. 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, Vol. 15, no. 1, Jan. 2022, doi:10.22037/ghfbb.vi.2301.