[1] Univ Glamorgan, Welsh Inst Hlth & Social Care, Pontypridd CF37 1DL, M Glam, Wales
[2] Univ Glamorgan, Gwent Healthcare NHS Trust, Pontypridd CF37 1DL, M Glam, Wales
[3] Univ Oxford, Dept Psychiat, Oxford OX1 2JD, England
[4] Univ Warwick, Dept Philosophy, Coventry CV4 7AL, W Midlands, England