Santos, L.M. dos et al. 2011. Postpartum women’s perception on the companion’s participation during the delivery process. Revista de Enfermagem UFPE on line. 5, 5 (jun. 2011), 1105–1111. DOI:https://doi.org/10.5205/reuol.1302-9310-2-LE.0505201104.