SAKORNTANUN, W.; CHATCHAWAN, U.; HONGRATTANA, K. The characteristics of labor pain during the active phase of primipara. Archives of Allied Health Sciences, Khon Kaen, Thailand, v. 24, n. 2, p. 191–200, 2012. Disponível em: https://he01.tci-thaijo.org/index.php/ams/article/view/66280. Acesso em: 16 sep. 2026.