共 9 条
[1]
BENNETT TL, 1991, J ULTRAS MED, V10, P695
[3]
CHAOUI R, 1998, 3D ULTRASOUND OBSTET, P135
[4]
Fortunato SJ, 1996, AM J OBSTET GYNECOL, V174, P1828, DOI 10.1016/S0002-9378(96)70217-X
[6]
LEE A, 2001, ECTOPIA CORDIS DIAGN
[8]
Reece EA, 1999, SEMIN PERINATOL, V23, P424