共 8 条
[2]
GRUENWALD P, 1960, AM J CLIN PATHOL, V34, P247
[3]
JOHNSON ML, 1983, ULTRASONOGRAPHY OBST
[6]
MOORE KL, 1973, DEV HUMAN
[7]
PEARSON HA, 1983, NELSON TXB PEDIATRIC
[8]
SCHMIDT W, 1985, J ULTRAS MED, V4, P667