TY  - RPRT
TI  - Cervical length and preterm labor.
AU  - D F Colombo
AU  - J D Iams
PY  - 2000
DO  - 10.1097/00003081-200012000-00004
UR  - https://pubmed.ncbi.nlm.nih.gov/11100291/
ID  - 11100291
ER  -