The Effect Of Combination Of Progressive Muscle Relaxation And Mckenzie Neck Exercise On Intensity Pain Cases Of Myofascial Pain Syndrome Upper Trapezius Muscle On Students. JKF [Internet]. 2022 Oct. 31 [cited 2025 Jul. 4];5(1):53-60. Available from: https://ejournal.medistra.ac.id/index.php/JKF/article/view/1217