1 Institute for Medical Information Processing, Biometrics and Epidemiology, Ludwig-Maximilians-Universität München, Munich, Germany
2 German Center for Vertigo and Balance Disorders (DSGZ), Ludwig-Maximilians-Universität München, Munich, Germany
3 School of Nursing Science, Witten/Herdecke University, Witten, Germany
4 Institute of Health and Nursing Science, Martin-Luther-University Halle-Wittenberg, Halle, Germany
Accepted July 22, 2014
Correspondence
Uli Fischer, Institute for Medical Information Processing, Biometrics and Epidemiology, Ludwig-Maximilians-Universität, Marchioninistraße 17, Munich 81377, Germany.
E-mail: [email protected]
Grant sponsor: German Federal Ministry of Education and Research; Grant Numbers: 01GY1113A 01GY1113B.