Langford Dale J, de C Williams Amanda C
Physiological Nursing, School of Nursing, University of California, San Francisco, San Francisco, CA, USA Research Department of Clinical, Educational & Health Psychology, University College London, London, UK.
Pain. 2014 Jul;155(7):1183-1184. doi: 10.1016/j.pain.2014.03.026. Epub 2014 Apr 4.