Maharajan P., D., T. J. Singh, S. B. Devi, H. R. Singh, D. R. Paul, and J. L. “Profile of Patients Undergoing Third Line Anti-Retroviral Therapy”. International Journal of Advances in Medicine, vol. 7, no. 9, Aug. 2020, pp. 1394-9, doi:10.18203/2349-3933.ijam20203605.