共 12 条
[1]
BOSCHANN HW, 1958, ACTA CYTOL, V2, P591
[2]
BUTLER EB, 1971, LANCET, V2, P1390
[3]
CARY WH, 1943, AM J OBSTET GYNECOL, V46, P421
[5]
GRAVLEE LC, 1969, OBSTET GYNECOL, V34, P168
[7]
HOPMAN BC, 1958, ACTA CYTOL, V2, P567