This is an early access version, the complete PDF, HTML, and XML versions will be available soon. Open AccessArticle by Nina Rosa Neuendorff , Rainer Wirth , Kiril Stoev , Maria Schnepper , Isabel Levermann , Baigang Wang , Chantal Giehl , Ulrike Sonja Trampisch , Lukas Funk and Maryam Pourhassan * Department of Geriatrics, Marien Hospital Herne, University Hospital, Ruhr University Bochum, 44625 Herne, Germany * Author to whom correspondence should be addressed.
