共 6 条
[1]
BUNDY AL, 1986, J ULTRAS MED, V5, P361
[2]
CHUDLEIGH P, 1984, PRENATAL DIAG, V4, P135, DOI 10.1002/pd.1970040207
[3]
FURNESS ME, 1987, LANCET, V2, P693
[4]
NICHOLAIDES KH, 1986, LANCET, V1, P283
[5]
OSTERLE SJ, 1989, PRENAT DIAGN, V9, P205
[6]
RICKETTS NEM, 1987, LANCET, V1, P213