WIRA EKDENI AIFA; FAJAR SARI TANBERIKA; SUMANDAR. Effect Of Counterpressure With Birth Ball On Reduction Of Labor Pain In First Stage . Science Midwifery, [S. l.], v. 10, n. 3, p. 2353–2358, 2022. DOI: 10.35335/midwifery.v10i3.652. Disponível em: https://www.midwifery.iocspublisher.org/index.php/midwifery/article/view/652. Acesso em: 19 apr. 2026.