*Danish Pain Research Center
Department of †Neurosurgery
‡Neurology
§Anesthesiology, Aarhus University Hospital, Aarhus C, Denmark
K.M. designed the study, collected most of the data, analyzed the data, and prepared the first draft of the manuscript. B.M.C. collected the rest of the data. M.E.M. analyzed the photographic material. T.S.J., L.N., and J.C.S. provided clinical and scientific advice. All authors revised, contributed to, and approved the final manuscript.
The study was carried out as part of a cofinanced PhD study funded by Aarhus University, Aarhus, Denmark; St Jude Medical, Zaventem, Belgium; and the Danish Medical Research Council, Copenhagen, Denmark. K.M. and J.C.S. have received teaching fees from St Jude Medical and are paid consultants for Biolab Technology. The remaining authors declare no conflict of interest.
Reprints: Kaare Meier, MD, PhD, Danish Pain Research Center, Aarhus University Hospital, Noerrebrogade 44, Building 1A, Aarhus C DK-8000, Denmark (e-mail: [email protected]).
Received August 15, 2012
Accepted March 3, 2013
