DECREASED BACK PAIN IN TRIMESTER III PREGNANT WOMEN DUE TO PREGNANCY EXERCISE IN SIDOMULYO HEALTH CENTER OF PEKANBARU IN 2019. JURNAL IBU DAN ANAK [Internet]. 2020 Jun. 1 [cited 2026 Jan. 12];8(1):53-9. Available from: https://jurnal.pkr.ac.id/index.php/JIA/article/view/297