共 15 条
[3]
BROMLEY B, 1994, OBSTET GYNECOL, V83, P434
[5]
FLEISCHER AC, 1991, J ULTRAS MED, V10, P563
[8]
KURJAK A, 1991, J ULTRAS MED, V10, P295
[9]
KURJAK A, 1994, J ULTRAS MED, V13, P295
[10]
KURJAK A, 1993, ULTRASOUND OBST GYN, V3, P1