TY  - RPRT
TI  - Mathematical function for maternal age in Down's syndrome.
AU  - J S Tay
AU  - W C Yip
PY  - 1984
DO  - 10.1203/00006450-198404000-00015
UR  - https://pubmed.ncbi.nlm.nih.gov/6232495/
ID  - 6232495
ER  -