Robert R. Edwards, David M. Almeida, Brendan Klick, Jennifer A. Haythornthwaite, Michael T. Smith
Pain.
Author manuscript; available in PMC 2009 July 1.Published in final edited form as: Pain. 2008 July; 137(1): 202–207. Published online 2008 April 22. doi: 10.1016/j.pain.2008.01.025