Patient phenotyping in clinical trials of chronic pain treatments: IMMPACT recommendations

Edwards R, Dworkin R, Turk D, Angst M, Dionne R, Freeman R, Hansson P, Haroutounian S, Arendt-Nielsen L, Attal N, Baron R, Brell J, Bujanover S, Burke L, Carr D, Chappell A, Cowan P, Etropolski M, Fillingim R, Gewandter J, Katz N, Kopecky E, Markman J, Nomikos G, Porter L, Rappaport B, Rice A, Scavone J, Scholz J, Simon L, Smith S, Tobias J, Tockarshewsky T, Veasley C, Versavel M, Wasan A , Wen W, Yarnitsky D