SIWI, R. P. Y.; RETNANINGTYAS, E.; WULANDARI, A.; MASIGA, M. D. Analysis of endorphin massage and deep breathing relaxation on reducing back pain in pregnant women. International Journal of Nursing and Midwifery Research, [S. l.], v. 4, n. 3, p. 91–99, 2026. DOI: 10.35335/ners.v4i3.682. Disponível em: https://journals.iarn.or.id/index.php/ners/article/view/682. Acesso em: 19 aug. 2026.