Qurat-ul-Ain and Iqra ishaq (2017) “COMPARISON BETWEEN THE EFFECTIVENESS OF MCKENZIE EXTENSION EXERCISES AND WILLIAM FLEXION EXERCISES FOR TREATMENT OF NON-SPECIFIC LOW BACK PAIN ”, Journal of University Medical & Dental College, 8(3), pp. 68-72. Available at: https://www.jumdc.com/index.php/jumdc/article/view/145 (Accessed: 10October2025).