1. Department of Rehabilitation and Geriatrics, Geneva Medical School and Univeristy Hospitals, Thonex-Geneve, Switzerland.
2. Department of Infectious and Tropical Diseaes, Hopital de La Croix Rousse, Lyon, France.
3. Institute for Biomedical Aging Research, Innsbruck, Austria.
4. University of Bristol, Bristol, United Kingdom.
5. Geneva Medical School, Geneva, Switzerland.
6. Center on Aging, Padual, Italy.
7. Hopital Charles Foix, Ivry sur Seine, France.
8. University Hospitals of Leicester NHS Trust, Leicester Royal Infirmary, Leicester, United Kingdom.
9. Ev. Krankenhaus Elisabethenstift, Darmstadt, Germany.