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Article History

Received: 11 July 2024

Accepted: 17 October 2024

First Online: 13 November 2024

Declarations

:

: Ethics approval was granted via a coordinated procedure lead by the Ethic board of the University Hospital RWTH Aachen (reference number for all centers: EK 323/21) for all ethics committees of the involved clinical centers: the Ethic boards of the University Hospital RWTH Aachen (reference: 323/21), the University Hospital Muenster (local registration number: 2021–572-b-S), the University Hospital Ruhr-University Bochum (local registration number: 21–7367-BR), and of the North Rhine State Chamber of Physicians (ÄkNo) (for LVR Hospital Viersen and LVR Hospital Bonn, local reference number: 2021346). Written informed consent is obtained from all young patients and their parents/legal guardians. The study is undertaken in accordance with the Declaration of Helsinki, the ICH E6 Guidelines for Good Clinical Practice (GCP), local rules, regulations, and applicable requirements with independent data management.

: Not applicable—no identifying images or other personal or clinical details of participants are presented here or will be presented in reports of the trial results. The participant information materials and informed consent form are available from the corresponding author on request.

: Tanja Legenbauer: Royalties by various publishers such as Hogrefe, Springer, and Kohlhammer for treatment manuals on eating disorders and body image disorder, research grants from the German Ministry for Research and Education.Beate Herpertz-Dahlmann: Research grants from the German Research Society, the German Ministry for Research and Education, EU/ERA NET and the Gemeinsamer Bundesausschuss (federal joint committee), author’s honorary from Kohlhammer publisher, speaker’s honorary from Infectopharm and Editor-in-Chief honorary from Wiley.The other authors declare that they have no competing interests.