1. Cologne Center for Ethics, Rights, Economics, and Social Sciences of Health (ceres), University of Cologne; and Research Unit Ethics, Medical Faculty, University of Cologne, Cologne, Germany;
2. Department of Business Administration and Healthcare Management, University of Cologne, Cologne, Germany;
3. Department of Neonatology and Pediatric Intensive Care, Children’s Hospital, University Clinic Cologne, Cologne, Germany;
4. Department of Pediatrics, University of Lübeck, Lübeck, Germany;
5. Faculty of Human Sciences and Faculty of Medicine, Institute of Medical Sociology, Health Services Research and Rehabilitation Science, University of Cologne, Cologne, Germany;
6. Institute for Medical Economics and Health Services Research, Rheinische Fachhochschule Cologne, Cologne, Germany