共 22 条
- [2] BENIRSCHKE K, 1955, OBSTET GYNECOL, V6, P399
- [6] CHERVENAK FA, 1986, J ULTRAS MED, V5, P405
- [7] THE SIGNIFICANCE OF ONE UMBILICAL ARTERY [J]. ARCHIVES OF DISEASE IN CHILDHOOD, 1960, 35 (181) : 285 - 288
- [8] FROEHLICH LA, 1973, PEDIATRICS, V52, P6
- [10] JANOSKO EO, 1977, AM SURGEON, V43, P177