Article History
Received: 8 July 2019
Accepted: 14 October 2019
First Online: 12 November 2019
Ethics approval and consent to participate
: This study processes anonymized data. Therefore, it does not pose a research project involving human subjects according to the Hamburg Association Law. Hence, ethics committee of the Hamburg Medical Chamber waived approval (reference number: WF-018/19). Patients were informed about the purpose of the study and data privacy issues and gave written informed consent prior to participation.
: Not applicable.
: TMK declares no conflict of interest. MA has served as consultant to or paid speaker for clinical trials sponsored by companies that manufacture drugs used for the treatment of psoriasis, including AbbVie, Almirall, Amgen, AstraZeneca, Biogen, Boehringer Ingelheim, Celgene, Centocor, Eli-Lilly, GSK, Hexal, Janssen, Leo, Medac, Merck, MSD, Novartis, Pfizer, UCB and XenoPort. Marina Otten receives funding by Celgene.