Proungvitaya, T., S. Jantorn, S. Suwannathada, P. Homchampa, and S. Proungvitaya. “Incidence of Hepatitis B and C Virus in New Cases of Hepatocellular Carcinoma Patients Attending at National Cancer Institute”. Archives of Allied Health Sciences, vol. 24, no. 3, Dec. 2012, pp. 264-71, https://he01.tci-thaijo.org/index.php/ams/article/view/66287.