共 23 条
[11]
KAWAI M, 1992, OBSTET GYNECOL, V79, P163
[14]
KURJAK A, 1991, J ULTRAS MED, V10, P295
[16]
KURJAK A, 1992, OBSTET GYNECOL, V80, P917
[17]
KURJAK A, 1992, J ULTRAS MED, V11, P631
[18]
SASSONE AM, 1991, OBSTET GYNECOL, V78, P70
[19]
SCHNEIDER VL, 1993, OBSTET GYNECOL, V81, P983