共 18 条
[4]
DIAZ S, 1988, CONTRACEPTION, V38, P37
[5]
Ginneken J. K. van, 1977, Journal of Biosocial Science, P41, DOI 10.1017/S0021932000023828
[9]
HOWIE PW, 1982, J REPROD FERTIL, V65, P545, DOI 10.1530/jrf.0.0650545