MICHALCZYK, Michał; TORBÉ, Dorota; TORBÉ, Andrzej. Evaluation of the impact of various methods of analgesia onto duration of labor. Journal of Education, Health and Sport, [S. l.], v. 8, n. 8, p. 951–958, 2018. Disponível em: https://apcz.umk.pl/JEHS/article/view/5880. Acesso em: 24 jan. 2025.