1. Faculty of Health Sciences and Sport, University of Stirling, Stirling, Scotland, United Kingdom
2. Department of Disability and Human Development, University of Illinois at Chicago, Chicago, IL, USA
3. Splaine Consulting, Columbia, MD, USA
4. Norwegian National Advisory Unit on Ageing and Health, Oslo, Norway
5. ANFFAS Trentino Onlus, Trento, Italy
6. Department of Biology, Utica College, Sarasota, FL, USA