TY  - RPRT
TI  - Preterm birth risk assessment.
AU  - J G Mauldin
AU  - R B Newman
PY  - 2001
DO  - 10.1053/sper.2001.26419
UR  - https://pubmed.ncbi.nlm.nih.gov/11561909/
ID  - 11561909
ER  -