1. Department of Palliative Medicine, Comprehensive Cancer Center CCC Erlangen-EMN, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
2. Institute for Biomedicine of Aging, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
3. Department of General Internal and Geriatric Medicine, Hospital of the Order of St. John of God Regensburg, Regensburg, Germany
4. Institute for General Practice, Hannover Medical School, Hannover, Germany
5. Institute of Psychogerontology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Nürnberg, Germany
6. Division of Health Management, School of Business and Economics, Institute of Management (IFM), Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Nürnberg, Germany