About the Authors

Friederike Mahn

Contributed equally to this work with: Friederike Mahn, Philipp Hüllemann

Affiliation Sektion Neurologische Schmerzforschung und -therapie, Klinik für Neurologie, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Germany

Philipp Hüllemann

Contributed equally to this work with: Friederike Mahn, Philipp Hüllemann

Affiliation Sektion Neurologische Schmerzforschung und -therapie, Klinik für Neurologie, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Germany

Ulrich Gockel

Affiliation CASQUAR GmbH, Computerassoziierte Qualitätssicherung und Rehabilitationsförderung, Bochum, Germany

Mathias Brosz

Affiliation StatConsult GmbH, Magdeburg, Germany

Rainer Freynhagen

Affiliation Zentrum für Anästhesiologie, Intensivmedizin, Schmerztherapie und Palliativmedizin, Benedictus Krankenhaus Tutzing, Tutzing, Germany

Thomas R. Tölle

Affiliation Klinik für Neurologie, Technische Universität München, München, Germany

Ralf Baron

r.baron@neurologie.uni-kiel.de

Affiliation Sektion Neurologische Schmerzforschung und -therapie, Klinik für Neurologie, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Germany

Competing Interests

In the past three years, RF has received research support, consulting, or speaking fees from Astellas, Grünenthal, Lilly/Boehringer, Pfizer, UCB/Schwarz. RB has received research support, consulting, or speaking fees from Grünenthal, Lilly/Boehringer-Ingelheim, Mundipharma, Pfizer, Medtronic, Schwarz Pharma, Allergan, Genzyme, UCB BioSciences, Astellas, Sanofi Pasteur, Eisai, Novartis. TRT has received honoraria as a consultant and/or speaker from Grünenthal, Eli Lilly and Company, Boehringer-Ingelheim Pharmaceuticals, Pfizer, UCB Pharma, and Mundipharma. PH and FM have received research support, consulting, or speaking fees from Grünenthal and Pfizer. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: RB RF TRT MB UG. Analyzed the data: MB FM PH RB TRT RF. Wrote the paper: FM PH RB. Acquisition of data: FM PH UG MB RF TRT RB.