Sham acupuncture is not a placebo.
Li
Shih Min
SM
Costi
Jéssica Maria
JM
Teixeira
João Eduardo Marten
JE
D015670:Acupuncture Therapy; D006801:Humans; D017116:Low Back Pain / Q000628:therapy; D015990:Placebo Effect; D016032:Randomized Controlled Trials as Topic / Q000379:methods*