Effectiveness of Hoffman Exercise on Breastfeeding among Primipara Mothers with Flat and Retracted Nipple: A Narrative Review. International Journal of Nursing Education, [S. l.], v. 11, n. 4, p. 44–45, 2019. DOI: 10.37506/ijone.v11i4.3948. Disponível em: https://medicopublication.com/index.php/ijone/article/view/3948. Acesso em: 17 may. 2026.