2Spong CY,Beall M,Rodrignes D,et al.An objective definition of shoulder dystocia:prolonged head-to-body delivery intervals and/or the use of ancillary obstetric maneuvers[J].Obstet Gynecol,1995,86(3):433-436.
3Renick R.Management of shoulder girdle dystocia[J].Clin Obstet Gynecol,1980,23(2):559-564.
4Sacks DA,Chen W.Estimating fetal weight in the management of macrosomia[J].Obstet Gynecol Surv,2000,55(4):229-239.
5Combs CA,Rosenn B,Miodovnik M,et al.Sonographic EFW and macrosomia:is therean optimum formula to predictdia-beticfetal macrosomia[J]?J Matern Fetal Med,2000,9(1):55-61.
6Song TB,Moore TR,Lee JI,et al.Fet al weight prediction by thigh volume measurement with three-dimensional ultra-sonography[J].Obstet Gynecol,2000,96(2):157-161.
7Gonen R,Spiegel D,Abend M.Is macrosomia predictable,and are shoulder dystocia and birth trauma preventable[J]?Obstet Gynecol,1996,88(4):526-529.
8Rouse DJ,Owen J.Prophylactic cesarean delivery for fetal macrosomia diagnosed by means of ultrasonog raphy-A Faustion Bargain[J].Am J Obstet Gynecol,1999,181(2):332-338.
9Langer O,Berkus MD,Huff RW,et al.Shoulder dystocia:should the fetus weighting greater than or equal to 4000 grams be delivered by cesarean section[J]?AM J Obstet Gynecal,1991,165(4):831-837