FARRAG, R. E.; OMAR, A. M. Using of Birthing Ball during the first Stage of Labor: Its Effect on the Progress of Labor and Outcome among Nulliparous Women. International journal of Nursing Didactics, [S. l.], v. 8, n. 09, p. 01–10, 2018. DOI: 10.15520/ijnd.v8i09.2289. Disponível em: http://innovativejournal.in/index.php/ijnd/article/view/2289. Acesso em: 26 apr. 2024.