1. Medical Faculty Martin Luther University Halle‐Wittenberg Halle (Saale) Germany
2. Department of Epidemiology Mailman School of Public Health Columbia University New York New York USA
3. Institute of Medical Sociology (IMS) Interdisciplinary Centre for Health Sciences Medical Faculty Martin Luther University Halle‐Wittenberg Halle (Saale) Germany
4. Institut fuer Anatomie und Zellbiologie MLU Halle‐Wittenberg Halle (Saale) Germany
5. Department of Sociomedical Sciences Mailman School of Public Health Columbia University New York New York USA