Zaman, K. K., Misra, S. N., Rakue, Y., Wattanagoon, Y., Kitayaporn, D., Bowonwatanuwong, C., & Khan, R. M. (2011). Relationship Between CD4 Lymphocyte levels and PPD skin test Measurement in Adult Aids Patients with pulmonary tuberculosis. Journal of Postgraduate Medical Institute, 11(2). Retrieved from https://www.jpmi.org.pk/index.php/jpmi/article/view/575