[1] Univ Barcelona, Res & Dev Unit, Fundacio St Joan de Deu, Parc Sanitari St Joan de Deu, Barcelona, Spain
[2] Inst Salud Carlos III, CIBERSAM, Ctr Invest Biomed Red Salud Mental, Madrid, Spain
[3] South London & Maudsley NHS Fdn Trust, Physiotherapy Dept, Denmark Hill, London, England
[4] Kings Coll London, Inst Psychiat Psychol & Neurosci, Hlth Serv & Populat Res Dept, De Crespigny Pk, London, England
[5] Katholieke Univ Leuven, Dept Rehabil Sci, Leuven, Belgium
[6] Katholieke Univ Leuven, Univ Psychiat Ctr, Kortenberg, Belgium