1. Department of Geriatrics and Neurology, Diakonie Hospital Jung Stilling Siegen, 57074 Siegen, Germany
2. Department of Neurology, Justus Liebig University, 35392 Giessen, Germany
3. Department of Cardiology, Diakonie Hospital Jung Stilling Siegen, 57074 Siegen, Germany
4. Department of Epidemiology, Philipps University Marburg, 35043 Marburg, Germany