TY  - RPRT
TI  - Randomized clinical trials in surgery: why do we need them?
AU  - Charles M Balch
PY  - 2006
DO  - 10.1016/j.jtcvs.2006.03.039
UR  - https://pubmed.ncbi.nlm.nih.gov/16872941/
ID  - 16872941
ER  -