1. Academic Centre for Nursing and Midwifery; Department of Public Health & Primary Care; University of Leuven; KU Leuven Belgium
2. Department of Geriatrics; University Hospitals Leuven; Belgium
3. Institute of Nursing Science; Department of Public Health, University of Basel; Switzerland
4. Public Health Services; Department of Public Health and Social Affairs; Government of Canton Vaud; Switzerland
5. Lausanne University Hospital; Switzerland