共 14 条
- [1] CHUKUDEBELU WO, 1975, W AFR MED J, V23, P70
- [2] CHUKWUDEBELU WO, 1986, TROP J OBSTET GYNAEC, V1, P23
- [3] FRASER AC, 1972, J OBSTET GYN BR COMM, V79, P560
- [4] LEWEL TL, 1980, BRIT MED J, V280, P295
- [5] LWANGA C, 1977, East African Medical Journal, V54, P142
- [6] Megafu U, 1980, Int J Gynaecol Obstet, V17, P450
- [7] OKOJIE S E, 1976, International Journal of Gynecology and Obstetrics, V14, P517
- [8] PILKERTON JH, 1963, PRACTITIONER, V190, P309