8McDuffie RS,Beck A,Bischoff K,et al.Effect of frequency of prenatal care visits on perinatal outcome among low-risk women.A randomised controlled tria1. The Journal of The American Medical Association . 1996 被引量:1
9Campbell OMR,Graham WJ.On behalf of the Lancet steering group:Strategies for reducing maternal mortality:getting on withwhat works. The Lancet . 2006 被引量:1
10Spurgeon P.Antenatal delivery and postnatal comparisons of maternal satisfaction with two pilot changing birth schemes compared with a traditional model of care. Midwifery . 2001 被引量:1