Ullah, Md Ahsan, et al. “Comparative Efficacy of Various Methods of Physical Treatment Given to a Selected Group of Patients Presented With Non Specific Low Back Pain”. Journal of Chittagong Medical College Teachers’ Association, vol. 18, no. 1, Nov. 2009, pp. 15-18, doi:10.3329/jcmcta.v18i1.3815.