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Hartmann K, Viswanathan M, Palmieri R, Gartlehner G, Thorp J, Lohr KN. Outcomes of routine episiotomy: a systematic review. JAMA. 2005 May 4;293(293). 2141-8.
Abstract
Episiotomy at the time of vaginal birth is common. Practice patterns vary widely, as do professional opinions about maternal risks and benefits associated with routine use.