[1] Univ Rovira & Virgili, Unit Study & Treatment Pain ALGOS, Catalonia, Spain
[2] Univ Rovira & Virgili, Dept Psychol, Res Ctr Behav Assessment CRAMC, Catalonia, Spain
[3] Inst Invest Sanitaria Pere Virgil, Catalonia, Spain
[4] Univ Rovira & Virgili, Catalonia, Spain
[5] Univ Western Ontario, Schulich Sch Med & Dent, Clin & Neurol Sci Dept, London, ON, Canada
[6] Univ Washington, Dept Rehabil Med, Seattle, WA 98195 USA
[7] Univ Rovira & Virgili, Fdn Grunenthal, Chair Pediat Pain, Catalonia, Spain