共 15 条
- [1] BARDEN TP, 1980, OBSTET GYNECOL, V56, P1
- [2] BROWN SM, 1981, OBSTET GYNECOL, V57, P22
- [4] CARITIS SN, 1977, OBSTET GYNECOL, V50, P603
- [7] PREVENTION OF PREMATURITY [J]. AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY, 1976, 126 (07) : 809 - 820