The Effect of Endorphin Massage on the Intensity of Back Pain in Mothers During Active Phase I in Labor in Tegallega Village, Warungkondang District, Cianjur Regency, Indonesia. AMCR [Internet]. 2023 Sep. 18 [cited 2026 Aug. 19];4(5):447-50. Available from: https://hmpublisher.com/index.php/AMCR/article/view/366