TY  - RPRT
TI  - Are second-trimester amniotic fluids being properly examined?
AU  - D J Brock
AU  - C Gosden
PY  - 1977
DO  - 10.1016/s0140-6736(77)91552-5
UR  - https://pubmed.ncbi.nlm.nih.gov/73073/
ID  - 73073
ER  -