[1] Univ Cadiz, Dept Biomed Biotechnol & Publ Hlth, Cadiz, Spain
[2] Univ Cyprus, Dept Math & Stat, Nicosia, Cyprus
[3] European Univ Cyprus, Dept Hlth Sci, Nicosia, Cyprus
[4] Univ Nicosia, Dept Psychol, Nicosia, Cyprus
[5] Cyprus Univ Technol, Sch Hlth Sci, Dept Nursing, Limassol, Cyprus
[6] Cyprus Inst Neurol & Genet, Nicosia, Cyprus
[7] Univ Oxford, Nuffield Dept Orthopaed Rheumatol & Musculoskeleta, Oxford, England
[8] Univ Coll Dublin, Sch Psychol, Dublin, Ireland
[9] Riga Stradings Univ, Fac Publ Hlth & Social Welf, Psychol Lab, Riga, Latvia
[10] Fdn Univ Konrad Lorenz, Bogota, Colombia
[11] Univ Europea Madrid, Madrid, Spain
[12] Inst ACT, Madrid, Spain
[13] Univ Zaragoza, Zaragoza, Spain
[14] Duke Univ, Dept Psychiat & Behav Sci, Durham, NC USA
[15] Univ Cyprus, Dept Psychol, Nicosia, Cyprus
[16] Univ Basel, Dept Psychol, Div Clin Psychol & Intervent Sci, Basel, Switzerland
[17] UCL, Dept Appl Hlth Res, London, England