[1] Edge Hill Univ, Fac Hlth, Evidence based Practice Res Ctr, Lancaster, England
[2] Univ Manchester, Personal Social Serv Res Unit, Manchester, Lancs, England
[3] Warrington & Halton Hosp NHS Fdn Trust, Warrington, Cheshire, England
[4] Edge Hill Univ, Fac Hlth, Res & Scholarship, Lancaster, England
[5] Univ Glamorgan, Dept Care Sci, Nursing Res, Mid Glamorgan, Wales
[6] Univ Leicester, Dept Hlth Sci, Nursing, Leicester, Leics, England
[7] Birmingham Own Hlth, NHS Direct, Birmingham, W Midlands, England
[8] Wirral Univ Teaching Hosp NHS Fdn Trust, Geriatr & Stroke Med, Wirral, Merseyside, England