Affiliation: | aInstitute of Medical Informatics, Biometry and Epidemiology, University Hospital Essen, Germany;bDepartment of Internal and Integrative Medicine, Kliniken Essen-Mitte, Essen, Germany;cDepartment of Cardiology, Alfried Krupp Hospital, Essen, Germany;dInstitute of Social Medicine, Epidemiology and Health Economics, Charité-University Medical Centre, Berlin, Germany;eDepartment of Internal and Integrative Medicine, Immanuel Hospital Berlin, Berlin, Germany |