Changing associations of episiotomy and anal sphincter injury across risk strata: results of a population-based register study in Finland 2004–2011

por Räisänen, Sari, Cartwright, Rufus, Gissler, Mika, Kramer, Michael R, Laine, Katariina, Jouhki, Maija-Riitta, Heinonen, Seppo
Publicado 2013