共 9 条
[2]
LENZ W, 1961, DEUT MED WOCHENSCHR, V86, P2555
[3]
MCBRIDE WG, 1961, LANCET, V2, P1358
[4]
Ory H, 1974, JAMA-J AM MED ASSOC, V228, P68
[5]
RAMCHARAN S, 1981, WALNUT CREEK CONTRAC, V3, P162
[6]
SILVERBERG SG, 1975, OBSTET GYNECOL, V46, P503
[8]
1988, FDC REPORTS, V50, P10
[9]
1974, ORAL CONTRACEPTIVES, P27