共 5 条
[1]
FOLEY MR, 1991, OBSTET GYNECOL, V77, P471
[2]
FRIES MH, 1992, OBSTET GYNECOL, V79, P601
[3]
OCCLUSION OF UMBILICAL ARTERY IN ACARDIAC, ACEPHALIC TWIN
[J].
LANCET,
1991, 337 (8737)
:326-327