[1] Careum Sch Hlth, Pestalozzistr 5, CH-8032 Zurich, Switzerland
[2] Univ Basel, Inst Biomed Eth, Basel, Switzerland
[3] Univ Birmingham, Sch Social Policy, Birmingham, W Midlands, England
[4] Univ Vienna, Dept Nursing Sci, Vienna, Austria
[5] Univ Sussex, Sch Educ & Social Work, Brighton, E Sussex, England
[6] Univ Zurich, Inst Primary Care, Zurich, Switzerland