共 19 条
[4]
CHAMBERS JA, 1988, ARCH EMERG MED, V5, P26
[5]
DACHMAN AH, 1994, TXB GASTROINTESTINAL, P2218
[6]
Goldberg BB, 1998, J ULTRAS MED, V17, P609
[9]
McGahan JP, 1997, J ULTRAS MED, V16, P653