共 8 条
[1]
AKINGBA J, 1969, J NIGERIAN MED ASSOC, V6, P16
[2]
Akingba J B, 1970, J Nigeria Med Assoc, V7, P17
[3]
BALLARD WM, 1971, CLIN OBSTET GYNAECOL, V4, P338
[4]
OJO AO, 1978, W AFR MED J, P51
[5]
OKOJIE S E, 1976, International Journal of Gynecology and Obstetrics, V14, P517
[6]
OMU A E, 1981, International Journal of Gynecology and Obstetrics, V19, P495, DOI 10.1016/0020-7292(81)90011-4
[8]
SOLANKE F, 1979, NIG MED J JUN