TY  - RPRT
TI  - Efficacy or effectiveness?
AU  - E Ernst
AU  - M H Pittler
PY  - 2006
DO  - 10.1111/j.1365-2796.2006.01707.x
UR  - https://pubmed.ncbi.nlm.nih.gov/17040256/
ID  - 17040256
ER  -