Eason E, Labrecque M, Wells G, Feldman P. Preventing perineal trauma during childbirth: a systematic review. Obstet Gynecol. 2000 Jul;96(1):154.
Labrecque M, Eason E, Marcoux S. Ramdomized trial of perineal masaje during pregnancy: perineal symptoms three months after delivery. Am J...
Albers LL, Sedler KD, Bedrick EJ, Teaf D, Peralta P. Midwifery care measures in the second stage of labor and reduction of genital tract trauma...
Cuidados en el parto normal: guía práctica. Grupo de Trabajo Técnico, Organización Mundial de la Salud (OMS). http://www.holistika.net/articulo.php?articulo-52003.html