TY  - RPRT
TI  - Maternal age-specific rates for Down syndrome: changes over time.
AU  - P A Baird
AU  - A D Sadovnick
PY  - 1988
DO  - 10.1002/ajmg.1320290424
UR  - https://pubmed.ncbi.nlm.nih.gov/2969681/
ID  - 2969681
ER  -