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Comments
Fabrizio Benedetti, University of Turin Medical School; National Institute of Neuroscience
This is an interesting and
This is an interesting and well-conducted study. The methodology is sound and the interpretation of the data appropriate. It is a confirmation of previous studies, with some interesting methodological improvements. In their Discussion the authors say “Our study improved on this previous study [Pollo et al., 2011] by using a within-subjects design…” Indeed, we performed a similar study in 2011 by using a between-subjects design, in which three different verbal suggestions were given to three different groups of patients. In addition, our study was on acute pain (postoperative pain), whereas the present study is on chronic pain (migraine).