Rowbotham Michael C
Department of Neurology, University of California San Francisco, UCSF Pain Clinical Research Center, 1701 Divisadero Street, Suite 480, San Francisco, CA 94115, USA.
Pain. 2008 Dec;140(3):401-404. doi: 10.1016/j.pain.2008.10.026. Epub 2008 Nov 11.