TY  - GEN
AU  - Hook,E B
AU  - Cross,P K
TI  - Maternal age-specific rates of chromosome abnormalities at chorionic villus study: a revision
SN  - 0002-9297
PY  - 1989///0922
KW  - Adult
KW  - Chorionic Villi Sampling
KW  - Chromosome Aberrations
KW  - Female
KW  - Gestational Age
KW  - Humans
KW  - Maternal Age
KW  - Middle Aged
KW  - Pregnancy
KW  - Pregnancy, High-Risk
KW  - Regression Analysis
N1  - Publication Type: Letter
ER  -