4SPONG C Y,BERGHELLA V,WENSTROM KD,et al. Preventingthe First Cesarean Delivery : Summary of a Joint Eunice KennedyShriver National Institute of Child Health and Human Develop-ment, Society for Maternal - Fetal Medicine, and American Col-lege of Obstetricians and Gynecologists Workshop[ J]. Obstetrics &Gynecology,2012,120(5) :1181 -1193. 被引量:1
5JOHANTGEN M,FOUNTAIN L’ZANGARO G,et al. Comparisonof labor and delivery care provided by certified nurse - midwivesand physicians : A systematic review, 1990 to 2008 [ J]. Women'sHealth Issues,2012,22( 1) :73 -81. 被引量:1
6Mannions O,Callaghan S,Murphy DB,et al.Tramadol as adjunct to psoas compartment blockwith levobupivacaine0.5%a ran-domizeddouble-blindedstudy[J].BRJAnaesth,2005,94(4):352-356. 被引量:1