共 24 条
[4]
CHI I C, 1989, Advances in Contraception, V5, P101, DOI 10.1007/BF01849478
[7]
COLE LP, 1983, AM J PUBLIC HEALTH, V73, P4
[9]
GORDON K, 1987, J REPROD FERTIL, V79, P397, DOI 10.1530/jrf.0.0790397
[10]
HEARTWELL SF, 1983, OBSTET GYNECOL, V61, P31