TY  - GEN
AU  - Monni,Giovanni
AU  - Zoppi,Maria Angelica
AU  - Ibba,Rosa Maria
TI  - Absence of nasal bone and detection of trisomy 21
SN  - 0140-6736
PY  - 2002///0430
KW  - Down Syndrome
KW  - diagnosis
KW  - Female
KW  - Humans
KW  - Maternal Age
KW  - Nasal Bone
KW  - abnormalities
KW  - Pregnancy
KW  - Pregnancy Trimester, First
KW  - Pregnancy, High-Risk
KW  - Prenatal Diagnosis
KW  - methods
KW  - Risk Factors
N1  - Publication Type: Comment; Letter
UR  - https://doi.org/10.1016/S0140-6736(02)08287-9
ER  -