Wongwajana, S., S. Wongratanacheewin, K. Chaicumpar, and P. Mootsikapun. “Enumeration of CD4, CD8 Lymphocyte and CD4/CD8 Ratio in HIV Infected Patients by Direct Immunofluorescence”. Srinagarind Medical Journal, vol. 7, no. 3, Nov. 2013, pp. 106-14, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/13610.