No funding or sponsorship was received for this study or publication of this article.
The authors thank Janet Collins for editing and proofreading the article. Ms Collins is a paid employee of CED Studien UG at the Interdisciplinary Crohn-Colitis Center Rhein-Main, Frankfurt am Main, Germany. No other funding was received in connection with the conception, writing, publication, or any other aspect of this article.
All named authors meet the International Committee of Medical Journal Editors (ICMJE) criteria for authorship of the article, take responsibility for the integrity of the work as a whole, and have given their approval for this version to be published.
Aysegül Aksan has received payment for research work from Immundiagnostik AG and congress expenses from Vifor Pharma. Axel U. Dignass has received consultancy fees from Abbott, MSD, Ferring, Janssen, Pfizer, Otsuka, Roche/Genentech, Takeda, Pharmacosmos, and Falk Foundation. Dr. Dignass has also received grants from Institut für Gemeinwohl and Stiftung Leben mit Krebs as well as payment for lectures including service on speakers’ bureaus from Falk Foundation, Ferring, MSD, Abbott, Janssen, Pfizer, Otsuka, Vifor, Stiftung Leben mit Krebs, Kompetenznetz CED, Takeda and Pharmacosmos. Additionally, A. Dignass has received payment for manuscript preparation from Falk Foundation and payment for development of education presentations from Abbott, Pharmacosmos, Falk Foundation and Ferring. Jürgen Stein has received consultancy fees from Abbvie, Fresenius-Kabi, Immundiagnostik, MSD, Pharmacosmos, Takeda, GI Dynamics and Vifor. Dr. Stein has also received payment for lectures from Abbvie, Falk Foundation, Ferring, Immundiagnostik, MSD, Pharmacosmos, Takeda, Thermofischer, GI Dynamics and Vifor. Additionally, Dr. Stein has received payment for manuscript preparation from Abbvie, Falk Foundation and MSD.
Compliance with Ethics Guidelines
This letter is based on previously conducted studies and does not contain any studies with human participants or animals performed by any of the authors.