TY  - RPRT
TI  - Twin ring retractor for the postpartum cervix.
AU  - H W SEIGER
PY  - 1960
DO  - 10.1016/0002-9378(60)90258-1
UR  - https://pubmed.ncbi.nlm.nih.gov/14444628/
ID  - 14444628
ER  -