Is Placebo Analgesia Mediated by Endogenous Opioids? : A Systematic Review

Author(s): Riet, G. ter, Craen, A. J. M. de, Boer, A. de, Kessels, A. G. H.

Journal/Book: Pain. 1998; 76: 273-275.

Note: Fact 3(4): 161

Keyword(s): placebo.