Hossain, M. D., M. R. A. Choudhury, and M. M. A. Mojumder. “A Comparative Study of Treatment of Chronic Backache Between Conventional Method and Trigger Point Injections (TPI)”. Journal of Armed Forces Medical College, Bangladesh, vol. 5, no. 1, July 2009, pp. 37-40, doi:10.3329/jafmc.v5i1.2850.