共 13 条
[1]
ADETORO OO, 1907, INT J GYN OBSTET, V25, P93
[2]
[Anonymous], 1985, LANCET, V2, P436
[3]
BRENDAN M, 1987, LANCET, V1, P981
[6]
LEKE RJ, ANN U SC SANTE, V4, P322
[8]
MORRISON JC, 1982, PERINAT NEONAT, V6, P87
[9]
NASAH BT, 1979, OBSTET GYNECOL, P741
[10]
NASAH BT, 1985, ANNUAL REPORT OBSTET