Gillani, Saima, Nasir Hussain Kazmi, and Muhammad Kamal. “ROLE OF BCG IN PREVENTING CHILDHOOD TUBERCULOSIS”. Pakistan Journal of Physiology 14, no. 2 (June 30, 2018): 46-49. Accessed April 25, 2019. http://www.pjp.pps.org.pk/index.php/PJP/article/view/840.