@misc{indiciaec6ce2c75df81, title = {Efficacy or effectiveness?}, author = {E Ernst and M H Pittler}, year = {2006}, doi = {10.1111/j.1365-2796.2006.01707.x}, url = {https://pubmed.ncbi.nlm.nih.gov/17040256/}, note = {Source identifier: 17040256} }