共 18 条
[1]
Able, 1967, BIRTH DEFECTS OAS, V3, P69
[3]
CAMPBELL S, 1972, LANCET, V2, P1226
[4]
COMPTON HL, 1971, OBSTET GYNECOL, V37, P27
[6]
DEVRIES PA, 1967, BIRTH DEFECTS OAS, V3, P75
[7]
GARRETT WJ, 1970, ULTRASONICS CLINICAL
[8]
GRAY GCM, 1950, RADIOLOGY, V54, P398
[9]
KOSSOFF G, 1974, AUSTRALAS RADIOL, V18, P62
[10]
MICHELL RC, 1973, J OBSTET GYN BR COMM, V80, P1100