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APA Citation
Pihl, S., Blomberg, M., & Uustal, E. (2020). internal anal sphincter injury in the immediate postpartum period; Prevalence, risk factors and diagnostic methods in the Swedish perineal laceration registry. European journal of obstetrics, gynecology, and reproductive biology, 245, 1–6. http://access.bl.uk/ark:/81055/vdc_100099354443.0x000035