TY  - RPRT
TI  - Randomized, controlled trials: Gold or bronze?
AU  - Huai yong Cheng
PY  - 2006
DO  - 10.1016/j.jamda.2006.09.003
UR  - https://pubmed.ncbi.nlm.nih.gov/17095430/
ID  - 17095430
ER  -