Funding for this research was provided by:
Takeda Pharma Vertrieb GmbH & Co. KG., Berlin, Germany.
Accepted: 26 April 2021
First Online: 8 May 2021
: Study procedures have been approved by the Ethics Committee of the Faculty of Medicine of Kiel University, Germany, (AZ D461/17) in compliance with the Professional Code of Conduct of the Schleswig-Holstein Chamber of Physicians and have therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
: Informed consent was obtained from all individual participants included in the study.
: Informed consent for publication was obtained from all individual participants included in the study.
: RdG and SPD have no relevant financial or non-financial interests to disclose.WM has received consulting fees from Abbvie, Amgen, Hexal, Janssen, Pfizer, Synformulas, and Takeda, outside the submitted work. Fees for lectures and further education from Abbvie, Alanta health service GmbH, Almirall, Aptalis, biogen, Falk, Gilead, Janssen, Pfizer, Medtronic, MSD, Shire, Takeda, and Vifor, outside the submitted work. Fees for studies from Abbvie, Janssen, MSD, Pfizer, and Takeda, outside the submitted work. Fees for activities in public law bodies as member of the Advisory Commission of the Examination Office for the Saarland, the State Committee of Physicians and Health Insurance Companies and the Extended State Committee, outside the submitted work. Dependent employment in the group of Alanta health group GmbH, Hamburg, outside the submitted work. Shares and other fees from Abbvie and Gilead, outside the submitted work.MH has received fees for studies from Sandoz, Janssen, and Abbvie, outside the submitted work.TK has received consulting fees from Takeda, Janssen, Pfizer, Ferring, AbbVie, and MSD, outside the submitted work.BB has received consulting fees from AbbVie, MSD, Shire, Ferring, Hospira, Takeda, Movetis, Shield Therapeutics, Pfizer, Biogen, Janssen, Hexal, and Celgene, outside the submitted work. Financial support for lectures and teaching from AbbVie, Ferring, MSD, Merckle, Falk, HLR, Shield Therapeutics, Pfizer, Celltrion, Takeda, Janssen, and Mundipharma, outside the submitted work. Grant and financial support for research from AbbVie and Ferring, outside the submitted work.SS has received personal fees from Abbvie, Arena, BMS, Biogen, Celltrion, Celgene, IMAB, Gilead, MSD, Mylan, Pfizer, Fresenius, Janssen, Takeda, Theravance, provention Bio, from Protagonist, and Falk, outside the submitted work.