Astuti, K.E.W., Murwati, M. and Fitriani, N. 2022. The Effect of Endorphin Massage on Reducing The Intensity of Back Pain in Third Trimester Pregnant Women: A Systematic Review. Journal of Maternal and Child Health. 7, 2 (Mar. 2022), 148–158. DOI:https://doi.org/10.26911/thejmch.2022.07.02.04.