DOI:
10.1055/s-00000142
Frauenheilkunde up2date
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References
Spencer K, Spencer CE, Power M. et al.
Screening for chromosomal abnormalities in the first trimester using ultrasound and maternal serum biochemistry in a one-stop clinic: a review of three years prospective experience.
BJOG 2003;
110: 281-286
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