[1] Kings Coll London, Florence Nightingale Fac Nursing & Midwifery, James Clerk Maxwell Bldg,57 Waterloo Rd, London SE1 8WA, England
[2] Zurich Univ Appl Sci, Sch Hlth Profess, Inst Nursing, Res Nursing Sci, Tech Str 81, CH-8401 Winterthur, Switzerland
[3] Cantonal Hosp Winterthur, Dept Med, Brauerstr 15, CH-8401 Winterthur, Switzerland
[4] Nursing Sci & Care GmbH, Obertor 8, CH-8400 Winterthur, Switzerland