[1] Birmingham & Solihull Mental Hlth Fdn Trust, Birmingham, W Midlands, England
[2] Staffordshire Univ, Stoke On Trent ST4 2DE, Staffs, England
[3] Staffordshire Univ, Fac Hlth, Stoke On Trent ST4 2DE, Staffs, England
[4] Univ Birmingham, Birmingham B15 2TT, W Midlands, England
[5] Staffordshire Univ, Ctr Ageing & Mental Hlth, Stoke On Trent ST4 2DE, Staffs, England