1. Deutsches Zentrum für Neurodegenerative Erkrankungen Standort Witten e.V., Germany
2. Faculty of Health, Department of Nursing Science, Witten/Herdecke University, Germany
3. Institute for Gerontology, J. F. Oberlin University, Tokyo, Japan
4. School of Nursing, San Francisco State University, CA, USA
5. Wicking Dementia Research and Education Centre, University of Tasmania, Hobart, Tasmania, Australia
6. Department of Health Services Research, Maastricht University, the Netherlands