8Simkin P,BoldingA.Update on nonpharmacologic approaches to relieve labor pain and prevent suffering.JMidwifery Womens Health,2004,49.
9Cluett ER,Pickering RM,Getliffe K,et al.Randomised controlled trial of labouring in water compared with standard of augmentation for management of dystocia in first stage of labour.BMJ,2004,328(7435):314.
10Richmond H.Womens experience of waterbirth.Pract Midwife,2003,6(3):26-31.
6Shapiro RL,Thior I ,Gilbert PB ,et al. Maternal satisfaction with singledose spinal analgesia for labor pain in Indonesin :a landmark study [J]. Joumal of Anesthesia, 2008 (22) : 55-58.
8Rawal N , Holmstrtm B, Crowhurst JA, et al. The combined spinal - epidural technique [J] . Anesthesia Clin North Am, 2001, 18 (2): 267-295.
9Torvaldsen S, Roberts CL No increased risk of caesarean or instrumental delivery for nulliparous women who have epidural analgesia early in ( term ) labour [J ] . Evid Based Med,2012, 17 (1): 21-22.
10Sia AT, Chong JL. Epidural 0. 2% ropivacaine for labour anal- gesia: parturient- controlled or continuous infusion [ J] . An- aesth Intensive Care, 1999, 27 (2) : 154 - 158.
