1Wager RK,Nielsen PE,Gonik B.Shoulder dystocia[J].Obstet Gynecol Clin North Am,1999,26(2):371-383.
2Nesbitt TS,Gilbert WM,Herrchen B.Should dystocia and associated risk factors with macrosomic infants born in California[J].Am J Obstet Gynecol,1998,179 (2):476-480.
3Bahar AM.Risk factors and fetal outcome in cases of shoulder dystocia compared with normal deliveries of a similar birthweight[J].Br J Obstet Gynecol,1996,103 (9):868-872.
4Verspyck E,Goffinet F,Hellot MF,et al.Newborn shoulder width:a prospective study of 2222 consecutive measurements[J].Br J Obstet Gynecol,1999,106(6):589-593.