TY  - RPRT
TI  - Procedural skills.
AU  - F J Spielman
AU  - K J Levin
AU  - J A Matherly
PY  - 1989
DO  - 10.1097/00001888-198907000-00011
UR  - https://pubmed.ncbi.nlm.nih.gov/2742702/
ID  - 2742702
ER  -