1. Institute for Health Services Research in Dermatology and Nursing (IVDP), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
2. Janssen-Cilag GmbH, Neuss, Germany
3. Düsseldorf Institute for Competition Economics (DICE), University of Düsseldorf, Düsseldorf, Germany
4. EVERSANA, Burlington, Canada