共 6 条
[1]
BROWN ADG, 1978, CLIN OBSTET GYNAECOL, V5, P151
[2]
Clemmesen J, 1979, Ugeskr Laeger, V141, P3193
[4]
GRABERT H, 1970, Journal of Obstetrics and Gynaecology of the British Commonwealth, V77, P1142
[5]
INGERSLEV M, 1970, OBSTETRIK
[6]
KARIM M, 1968, Journal of the Egyptian Medical Association, V51, P1037