共 10 条
[2]
ALBERT A, 1989, CONSUMER REPORTS MAR, P134
[4]
Hatcher R A, 1988, SIECUS Rep, V17, P1
[5]
KIRKMAN R, 1990, BRIT J FAM PLANN, V15, P107
[6]
LEEPER M A, 1989, Advances in Contraception, V5, P229, DOI 10.1007/BF01890894
[7]
LISKIN L, 1990, POPULATION REPORTS H, V8
[8]
RICHTERS J, 1988, LANCET, V2, P487
[9]
SHERRIS JD, 1982, POPULATION REPORTS H, V6