共 15 条
- [1] BAGSHAWE KD, 1973, J OBSTET GYN BR COMM, V80, P461
- [3] BREWER JI, 1961, TEXTBOOK GYNECOLOGY, P643
- [4] CURRY SL, 1975, OBSTET GYNECOL, V45, P1
- [6] GOLDSTEIN DP, 1972, J AMER MED ASSOC, V220, P209, DOI 10.1001/jama.220.2.209
- [9] HERTIG AT, 1947, AM J OBSTET GYNECOL, V53, P1