TY  - RPRT
TI  - Preterm cervical examination.
AU  - T M Stubbs
AU  - J P Van Dorsten
PY  - 1988
DO  - 10.1016/s0002-9378(88)80062-0
UR  - https://pubmed.ncbi.nlm.nih.gov/3421285/
ID  - 3421285
ER  -