TY  - RPRT
TI  - Spontaneously changing gravid cervix: clinical implications and prognostic features.
AU  - B S Hertzberg
AU  - M A Kliewer
AU  - T A Farrell
AU  - D M DeLong
PY  - 1995
DO  - 10.1148/radiology.196.3.7644635
UR  - https://pubmed.ncbi.nlm.nih.gov/7644635/
ID  - 7644635
ER  -