Ratnatunga, C. N., Thevanesam, V., Madegedara, D., Dissanayake, N. L. and Kumara, K. A. (2015) “T-SPOT. TB assay and tuberculin skin test for diagnosis and screening of tuberculosis: First report in a Sri lankan population”, Asian Journal of Medical Sciences, 7(1), pp. 14–19. doi: 10.3126/ajms.v7i1.12595.