Published Online: July 7, 2014. doi:10.1001/jama.2014.8342.
Conflict of Interest Disclosures: The author has completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and reported receiving a grant payable to her institution from the German Research Foundation; receiving a grant from Pfizer; and receiving payment for lectures from Grünenthal, Teva, Ipsen, and Bionorica.
Funding/Support: This work was supported by the German Research Foundation (FOR-1328).
Role of the Sponsor: The German Research Foundation had no role in the preparation, review, or approval of the manuscript or the decision to submit the manuscript for publication.
Members of the Placebo Competence Team: Ulrike Bingel, MD, PhD, Paul Enck, PhD, Winfried Rief, PhD, and Manfred Schedlowski, PhD.