00343nas a2200121   4500000000100000008004100001100001500042700001400057700001200071245012100083300001000204490000700214       2003                            d1 aRoberts C.1 aAlgert C.1 aTodd A.00aUsing routinely collected perinatal data to monitor evidence-based obstetric practice: restrictive use of episiotomy  a10-140 v10