Ambarita HFR, Ulfah K. EFFECT OF DEEP BACK MASSAGE METHOD ON INTENSITY OF PAIN IN THE FIRST STAGE OF LABOR . JKS [Internet]. 2022 Apr. 30 [cited 2026 Jan. 9];2(3):1041-8. Available from: https://jurnal.polkesban.ac.id/index.php/jks/article/view/792