1. Ludwig Boltzmann Institute of Osteology at the Hanusch Hospital of WGKK and AUVA Trauma Centre Meidling; 1st Medical Department; Hanusch Hospital Vienna Austria
2. Department of Neurology; Apallic Care Unit; Geriatric Centre Wienerwald Vienna Austria
3. Department of Internal Medicine; Krankenhaus der Barmherzigen Brüder; Vienna Austria