TY  - RPRT
TI  - Evaluation of different weight correction methods for antenatal serum screening using data from two multi-centre programmes.
AU  - D M Kennedy
AU  - V M Edwards
AU  - D J Worthington
PY  - 1999
DO  - 10.1177/000456329903600309
UR  - https://pubmed.ncbi.nlm.nih.gov/10376079/
ID  - 10376079
ER  -