共 10 条
- [2] BURTON CA, 1989, OBSTET GYNECOL, V74, P707
- [4] DAVID WO, 2006, OBSTET GYN CLIN N AM, V33, P153
- [6] EXACOUSTOS C, 1993, OBSTET GYNECOL, V82, P97
- [7] GABBE SG, 2007, OBSTET NORMAL PROBLE, P58
- [8] KATZ VL, 1989, OBSTET GYNECOL, V73, P593
- [10] SAMPAZ E, 2003, J REPROD MED, V48, P950