DOI: 10.1055/s-00000049

Clinics in Colon and Rectal Surgery

References

Varma A, Gunn J, Gardiner A, Lindow SW, Duthie GS.
Obstetric anal sphincter injury: prospective evaluation of incidence 
Dis Colon Rectum 1999; 42: 1537-1543  

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