aBrain Function Research Group, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
bDivision of Brain, Imaging and Behaviour-Systems Neuroscience, Toronto Western Research Institute, University Health Network; and Department of Surgery, University of Toronto, Toronto, Canada
cDepartment of Neurology and Rehabilitation, Tampere University Hospital, Tampere, Finland
dDepartment of Anaesthesia, Tata Memorial Hospital, Mumbai, India
eDepartment of Anaesthesiology, Charité Medical University, Benjamin Franklin Campus, Berlin, Germany
fDepartment of Neurology, Yale University School of Medicine, New Haven, CT, USA
gDepartment of Anesthesiology and Critical Care Medicine, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
hDepartment of Surgery and Cancer, Faculty of Medicine, Imperial College, Chelsea and Westminster Hospital campus, London, United Kingdom
iDivision of Population Health Sciences, University of Dundee, Dundee, Scotland, United Kingdom
jChair of Neurophysiology, Centre for Biomedicine and Medical Technology Mannheim, Heidelberg University, Mannheim, Germany
kPain Research and Nuffield Department of Clinical Neurosciences, University of Oxford, Pain Research Unit, Oxford, United Kingdom
*Corresponding author. Address: Brain Function Research Group, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa. Tel.: +27 11 717 2363; fax: +27 11 717 643 2765. E-mail address: [email protected] (P. R. Kamerman).
Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article.
Supplemental digital content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal's Web site (www.painjournalonline.com).
Received November 19, 2014
Accepted December 29, 2014
