Received: 8 May 2020
Revised: 14 May 2020
Accepted: 22 May 2020
First Online: 9 June 2020
Compliance with ethical standards
: Nothing to disclose: FL, SB, HCB, MF, MH, BK, IG, AK, SR, Research support by Novartis, Incyte: AH, Adboard Novartis, Incyte: PL; Speakers office: PL.
: This retrospective chart analysis was approved by the state´s chamber of physician´s review board (No. F-2020-052). It was performed according to the Declaration of Helsinki after informed consent.