共 30 条
- [2] ARTS NFT, 1971, EUR J OBSTET GYN R B, V3, P85
- [3] BABSON SG, 1964, PEDIATRICS, V33, P327
- [4] BARSS VA, 1985, OBSTET GYNECOL, V66, P779
- [7] TWIN GESTATIONS - MONITORING OF COMPLICATIONS AND ANOMALIES WITH US [J]. RADIOLOGY, 1987, 165 (02) : 449 - 453
- [8] CRANE JP, 1984, SEMIN ULTRASOUND CT, V5, P144
- [9] CRANE JP, 1980, OBSTET GYNECOL, V55, P678
- [10] DALTON ME, 1986, SEMIN PERINATOL, V10, P30