共 25 条
- [2] Bernard H. Russell, 2011, RES METHODS ANTHR QU
- [4] Cardozo ER, 2012, AM J OBSTET GYNECOL, V206, DOI [10.1016/j.ajog.2012.08.020, 10.1016/j.ajog.2011.12.002]
- [5] CARLSON KJ, 1993, NEW ENGL J MED, V328, P856
- [8] Ekpo GE, 2014, J REPROD MED, V59, P448