共 15 条
[1]
CLAIR MR, 1983, J ULTRAS MED, V2, P297
[5]
GRUENWALD P, 1963, BIOL NEONATORUM, V5, P215
[6]
HOBBINS JC, 1979, DIAGNOSTIC ULTRASOUN
[7]
IWAMOTO V, 1983, GYNECOL OBSTET INVES, V2, P265
[8]
KOLLITZ J, 1982, J ULTRAS MED, V1, P205