1. McMaster University, Hamilton, Ontario, Canada (J.J.R., F.F.)
2. University of Ottawa, Ottawa, Ontario, Canada (S.T.N.)
3. Michael G. DeGroote National Pain Centre, McMaster University, Hamilton, Ontario, Canada (L.W., V.A., B.S., R.C.)
4. Michael G. DeGroote National Pain Centre, McMaster University, and Chronic Pain Centre of Excellence for Canadian Veterans, Hamilton, Ontario, Canada (J.W.B.)