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Comment
. 2002 Apr 13;359(9314):1343.
doi: 10.1016/S0140-6736(02)08286-7.

Absence of nasal bone and detection of trisomy 21

David J R Hutchon
Comment

Absence of nasal bone and detection of trisomy 21

David J R Hutchon. Lancet. .
No abstract available

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