Urooj Khan, Sana Kayenat, Khadija Usman, Vinesh Kumar. CORRELATION BETWEEN LOW BACK PAIN AND RECTUS ABDOMINIS MUSCLE WEAKNESS USING KENDALL’S GRADING SCALE. pjr [Internet]. 2020Dec.5 [cited 2024May16];6(2):38-44. Available from: http://ojs.zu.edu.pk/ojs/index.php/pjr/article/view/834