1. Clinical Nutrition, University Hospitals of Geneva, Geneva, Switzerland.
2. Charité University Medicine, Research Group on Geriatrics, Berlin, Germany.
3. Social and Preventive Medicine, University of Bern, Bern, Switzerland.
4. Geriatrics, Department of Internal Medicine, Rehabilitation and Geriatrics, University Hospitals of Geneva, Geneva, Switzerland.
5. Rehabilitation and Palliative Medicine, University Hospitals of Geneva, Geneva, Switzerland.