TY  - RPRT
TI  - A chuck for extradural injections.
AU  - B R SIMPSON
AU  - R H SALT
PY  - 1961
DO  - 10.1093/bja/33.12.664
UR  - https://pubmed.ncbi.nlm.nih.gov/13913201/
ID  - 13913201
ER  -