https://www.selleckchem.com/pr....oducts/s64315-mik665
Estimation of the prevalence of obstetric anal sphincter injury (OASIS) in our environment and study of the associated risk factors. A retrospective observational study of cases and controls of assisted deliveries at the Severo Ochoa University Hospital of Leganés during the period from January 1, 2012, to December 31, 2017. A total of 88 OASIS diagnosed in the study period is compared with a randomly selected group of 181 controls of similar characteristics, vaginal births of cephalic of 36 weeks gestation or more, occurring duri
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