共 6 条
[1]
BEAZLEY J M, 1970, Journal of Obstetrics and Gynaecology of the British Commonwealth, V77, P193
[2]
BISHOP EH, 1964, OBSTET GYNECOL, V24, P266
[3]
CALDER AA, 1974, J OBSTET GYN BR COMM, V81, P39
[5]
KARIM S M M, 1970, Journal of Obstetrics and Gynaecology of the British Commonwealth, V77, P837
[6]
KARIM S M M, 1969, Journal of Obstetrics and Gynaecology of the British Commonwealth, V76, P769