1. Center on Aging and Mobility University Hospital Zurich, City Hospital Waid&Triemli and University of Zurich Zurich Switzerland
2. Department of Internal Medicine, Division of Endocrinology and Metabolism Medical University of Graz Graz Austria
3. Department of Geriatric Medicine and Aging Research University Hospital Zurich and University of Zurich Zurich Switzerland
4. University Clinic for Acute Geriatric Care City Hospital Waid&Triemli Zurich Switzerland