TY  - RPRT
TI  - Credentialing for endoscopic surgery.
AU  - N Perone
PY  - 1993
DO  - 10.1016/s0015-0282(16)56122-6
UR  - https://pubmed.ncbi.nlm.nih.gov/8339847/
ID  - 8339847
ER  -