1. Universitat Rovira i Virgili, Unit for the Study and Treatment of Pain—ALGOS, Research Center for Behavior Assessment (CRAMC), Department of Psychology , Tarragona, 43007 Catalonia, Spain
2. Institut d’Investigació Sanitària Pere Virgili, Universitat Rovira i Virgili , 43204 Catalonia, Spain
3. Department of Rehabilitation Medicine, University of Washington , Seattle, WA 98104, United States