Hasmar W, Faridah F, Hadi P. PERBEDAAN PENGARUH CORE STABILITY EXERCISE DAN WILLIAM FLEXION EXERCISE TERHADAP LOW BACK PAIN MYOGENIK : DIFFERENCES IN THE EFFECT OF CORE STABILITY EXERCISE AND WILLIAM FLEXION EXERCISE ON MYOGENIC LOW BACK PAIN. QJK [Internet]. 2023May30 [cited 2024Nov.22];17(1):64-71. Available from: https://ejournal.poltekkesjakarta1.ac.id/index.php/adm/article/view/908