Witt Claudia M, Lao Lixing, MacPherson Hugh
Institute for Social Medicine, Epidemiology and Health Economics, Charité University Medical Center, 10098 Berlin, Germany University of Maryland School of Medicine, Baltimore, MD, USA Tel.: +49 30 450529002; fax: +49 30 450529917 Center for Integrative Medicine, University of Maryland School of Medicine, Baltimore, MD, USA Department of Health Sciences, University of York, York, UK.
Pain. 2011 Sep;152(9):2180. doi: 10.1016/j.pain.2011.04.010. Epub 2011 May 6.