“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”. Archives of The Medicine and Case Reports, vol. 4, no. 5, Sept. 2023, pp. 447-50, https://doi.org/10.37275/amcr.v4i5.366.