Conflict of interest statement
AD, MA, FA and JB do not declare any conflict of interest. MS is a consultant for Pfizer, Janssen, Eli-Lilly, Novartis, UCB, Celgene, Galderma, Leo, MenloTx. Sanofi, Regeneron. Grants by Pfizer, Novartis, Leo, Galderma. Speaker for Pfizer, Janssen, Eli-Lilly, Novartis, UCB, Celgene, Galderma, Leo, MenloTx, Sanofi, Regeneron.