共 15 条
[1]
DALING JR, 1975, LANCET, V2, P170
[2]
FLEISS JL, STATISTICAL METHODS, P197
[3]
FURUSAWA J, 1966, HARMFUL EFFECTS INDU, P74
[6]
KRAJL B, 1974, LJUBLIANA ABORTION S, P2
[7]
LEMBRYCH VS, 1972, ZENTRALBLATT GYNAKOL, V94, P164
[8]
MARIYAMA YL, 1966, HARMFUL EFFECTS INDU, P64
[9]
OBEL EB, 1979, DAN MED BULL, V26, P192
[10]
PANTELAKIS SN, 1973, AM J OBSTET GYNECOL, V116, P779