共 208 条
[2]
ANDOLF E, 1990, OBSTET GYNECOL, V75, P106
[3]
[Anonymous], 1983, Br J Obstet Gynaecol, V90, P743
[4]
AURE JC, 1971, OBSTET GYNECOL, V37, P1
[8]
BAAK JPA, 1986, ANAL QUANT CYTOL, V8, P354
[10]
BAAK JPA, 1986, ANAL QUANT CYTOL, V8, P349