1Yancey MK,Pierce B,Schweitzer D et al.Observations on labor epidural analgesia and operative delivery rates[].American Journal of Obstetrics and Gynecology.1999
2Soreide E,Smedvig JP,Smedvig E.Epidural obstetrical analgesia - a friend or an enemy[].Tidsskr Nor Laegeforen.1998
3Dunn SM,Connelly NR,Steinberg RB et al.Intrathecal sufentanil versus epidural lidocaine with epinephrine and sufentanil for early labor analgesia[].Anesthesia and Analgesia.1998
4Hagelin A,Leyon J.The effect of labor on the acid- base status of the newborn[].Acta Obstetricia et Gynecologica.1998
5Lieberman E,Cohen A,Lang J et al.Maternal intrapartum temperature elevation as a irsk factor for cesarean delivery and assisted vaginal delivery[].American Journal of Public Health.1999
6Thorp JA,Breedlove G.Epidural analgesia in labor: an evaluation of risks and benefits[].Birth.1996
7Fogel ST,Shyken JM,Leighton BL et al.Epidural labor analgesia and the incidence of cesarean delivery for dystocia[].Anesthesia and Analgesia.1998
8Zhang J,Klebanoff MA,DerSimonian R.Epidural analgesia in association with duration of labor and mode of delivery: a quantitative review[].American Journal of Obstetrics and Gynecology.1999
9Wu JL,Hsu Ms,Hsu TC et al.The efficacy of intrathecal coadminstration of morphine and bupivacaine for labor analgesia[].Acta Anaesthesiologica.1997
10Albaladejo P,Bouaziz H,Benhamou D.Epidural analgesics:how can safety and efficacy be improved[].CNS Drugs.1998