TY  - RPRT
TI  - First trimester prenatal diagnosis.
AU  - Ray O Bahado-Singh
AU  - Chen S Chee Cheng
PY  - 2004
DO  - 10.1097/00001703-200404000-00014
UR  - https://pubmed.ncbi.nlm.nih.gov/15017349/
ID  - 15017349
ER  -