共 6 条
[1]
CHITKARA U, 1988, OBSTET GYNECOL, V71, P393
[3]
Reuwer PJHM, 1987, LANCET, P415
[5]
STILLER RJ, 1987, J REPROD MED, V32, P453
[6]
TRUDINGER BJ, 1987, LANCET, V1, P188