Putri PS, Ningsih SW, Syafitasari J. Innovation in the development of a maternity warm massage belt for reducing back pain intensity in working pregnant women. midwifery [Internet]. 2024 Sep. 25 [cited 2026 Apr. 30];12(4):1478-85. Available from: https://midwifery.iocspublisher.org/index.php/midwifery/article/view/1698