共 17 条
[1]
CAMPODONICO I, 1978, CLIN THER, V1, P454
[2]
CHI IC, 1978, RISKS BENEFITS CONTR, P478
[3]
GEHAN EA, 1965, BIOMETRIKA, V52, P203, DOI 10.1093/biomet/52.1-2.203
[5]
GOMEZROGERS C, 1967, INT PLANNED PARENTHO, P328
[7]
Hefnawi F., 1975, Analysis of intrauterine contraception., P431
[9]
HINGORAN.V, 1970, J REPROD FERTIL, V23, P513, DOI 10.1530/jrf.0.0230513