The rate of obstetric anal sphincter injuries in Finnish obstetric units as a patient safety indicator

: Pyykönen A, Gissler M, Jakobsson M, Lehtonen L, Tapper A-M

: 2013

 European Journal of Obstetrics and Gynecology and Reproductive Biology

: 169

: 1

: 33

: 38

: 6

: 0301-2115

DOI: https://doi.org/10.1016/j.ejogrb.2013.01.027