Limsricharoen, K. . “Incidence and Factors Related with Improved Chest Radiographic Findings in Covid-19 Patients after Favipiravir Treatment at the second Hospital Field of Kasetsart University: Suphanburi”. Hua Hin Medical Journal, vol. 3, no. 3, Dec. 2023, pp. 13-26, https://he01.tci-thaijo.org/index.php/hhsk/article/view/259190.