[1] ISPA Inst Univ, William James Ctr Res, Rua Jardim do Tabaco 34, P-1149041 Lisbon, Portugal
[2] Univ Washington, Dept Rehabil Med, Seattle, WA 98195 USA
[3] Univ Otago, Ctr Musculoskeletal Outcomes Res, Dunedin Sch Med, Dunedin, New Zealand
[4] Kathmandu Univ, Dept Physiotherapy, Sch Med Sci, Dhulikhel, Nepal
[5] Univ Porto, Fac Psychol & Educ Sci, Porto, Portugal
[6] Univ Porto CPUP, Ctr Psychol, Porto, Portugal
[7] Duke Univ, Sch Med, Durham, NC 27706 USA