Thunyavinichkul P, Kitisupornpun S,Pormme N, Wasusophaphol W,Sangsawang S, Arunthong S,Tanprasertswuk S 2017. Prevalence of Chronic Hepatitis B and Hepatitis C Virus Infection in Nongpakrang Subdistrict, Chiang Mai Province. Journal of The Department of Medical Services. 42, 2 (Apr. 2017), 102–109.