Prempree, Preecha, Anek Mungaomklang, Mayuree Tangkiatkumjai, Tuangrat Phodha, Pakakrong Kwankhao, Kanokwan Chewchuapun, Chutima Charuenporn, Darika Monta, and Thanawut Karapakdee. “SARS-CoV-2 Clearance from Andrographis paniculata, Boesenbergia rotunda, and Favipiravir among Mild COVID-19 Cases in Klong Prem Central Prison during Mid-2021: a Retrospective Study”. Outbreak, Surveillance, Investigation & Response (OSIR) Journal 15, no. 4 (December 30, 2022): 131–137. accessed October 2, 2026. https://he02.tci-thaijo.org/index.php/OSIR/article/view/262277.