TY  - RPRT
TI  - Needles used for spinal anesthesia.
AU  - Lawrence C Tsen
AU  - David L Hepner
PY  - 2006
DO  - 10.1586/17434440.3.4.499
UR  - https://pubmed.ncbi.nlm.nih.gov/16866646/
ID  - 16866646
ER  -