TY  - RPRT
TI  - Risk factors for preterm labor.
AU  - E R Pschirrer
AU  - M Monga
PY  - 2000
DO  - 10.1097/00003081-200012000-00003
UR  - https://pubmed.ncbi.nlm.nih.gov/11100290/
ID  - 11100290
ER  -