共 17 条
[2]
[Anonymous], 1990, BRIT MED J, V300, P1166
[4]
BROWN T, 1984, LANCET, V2, P1033
[5]
CARRINGTON D, 1987, LANCET, V1, P433
[8]
NICOLAIDES KH, 1988, LANCET, V1, P1073
[9]
PETERS MT, 1990, OBSTET GYNECOL, V75, P501
[10]
PORTER HJ, 1988, LANCET, V1, P535