DR. MOHAMMED SABIULLAH, et al. “IMMUNODIAGNOSIS OF PULMONARY AND EXTRAPULMONARY TUBERCULOSIS USING MYCOBACTERIUM TUBERCULOSIS ES-31 41 ANTIGEN”. International Journal of Pharma and Bio Sciences, vol. 6, no. 3, Sept. 2015, pp. 141-7, https://ijpbs.net/index.php/journal/article/view/4389.