1. The Institute for Clinical Evaluative Sciences; Toronto Ontario Canada
2. The Department of Medicine; McMaster University; Hamilton Ontario Canada
3. The School of Public Health and Health Systems; University of Waterloo; Waterloo Ontario Canada
4. The Department of Geriatric Medicine; All India Institute of Medical Sciences; New Delhi India
5. The Department of Geriatrics; Landspitali University Hospital; Faculty of Medicine; University of Iceland; Reykjavik Iceland
6. The Centre for Research in Geriatric Medicine; The University of Queensland; Brisbane Queensland Australia
7. The Medical Management Centre; Department of Learning, Informatics; Management and Ethics; Karolinska Institutet; Stockholm Sweden
8. The Institute for Biomedicine of Aging; University of Erlangen-Nuremberg; Klinikum Nuremberg Germany
9. Karolinska Institutet; Department of Clinical Science and Education; Södersjukhuset, and the Section of Emergency Medicine; Södersjukhuset AB Stockholm Sweden
10. The Department of Public Health; Centre for Health Services and Nursing Research; KU Leuven Belgium
11. The Geriatrics Center and Institute of Gerontology; University of Michigan; Ann Arbor MI