Wiebe Lauren A, Phillips Tudor J C, Li John-Michael, Allen Jeffrey A, Shetty Kishore
Northwestern University Medical School, 676 North St Clair Street, Suite 850, Chicago, IL 60611-2927, USA.
J Pain. 2011 Jun;12(6):619-24. doi: 10.1016/j.jpain.2011.03.006. Epub 2011 May 18.