S. Chutipongvivat, S. Jinoros, S. Subkitpiboon, U. Choasaun, V. Sutachai, and P. Veeraseatakul, “Prevalence of Hepatitis C virus Antibody in the upper north of Thailand”, J Assoc Med Sci, vol. 28, no. 2, p. 2, Feb. 2015.