Article History
First Online: 30 June 2020
Compliance with Ethical Standards
:
: No funding was received to assist in the preparation of this manuscript.
: Jacek C. Szepietowski reports personal fees from Abbvie, Leo Pharma, Novartis, Pierre-Fabre, Menlo Therapeutics, Sienna Biopharmaceuticals, Trevi, Janssen, Sunfarm, Elli-Lilly, Berlin-Chemie Mennarini, Merck, Regeneron, Sanofi-Genzyme, Amgen, Boehringer Ingelheim, Galapagos, InflaRX, Pfizer, UCB, Incyte and Helm. Radomir Reszke and Piotr Krajewski have no conflicts of interest to declare.