Document is current

Article History

Received: 26 February 2019

Accepted: 4 September 2019

First Online: 12 September 2019

Ethics approval and consent to participate

: This study is based on pseudonymized data (de-facto anonymized as no re-identification of subjects is possible) provided by participating centers for quality improvement and outcome research. After clarification of queries with the participating institution, at the latest 4 weeks after transmission of the data, these were completely anonymized without any possibility to re-identify a subject even at the treatment center. All participating institutions confirmed electronically that data collection. Germany is a Federal country, and the federal states are responsible for data protection, therefore rules and regulations do differ between each states. All participants - or in case of minors their legal guardians - agreed to contribute their routine clinical data for the joint analysis. The local institutional review boards at each participating center decided whether consent was obtained written or verbally. All data analyzed are from routine care based on current guidelines, no additional tests or information solely for this study was provided by the centers. All data were collected prior to the introduction of the EU General Data Protection Regulation (GDPR). The study was approved by the Ethics-Committee of Ulm University (reference number: 187/09) acting as Lead Ethics-Committee with validity for all participating institutions from Germany and for Austria (Dornbirn Kinderklinik and Wien Universitätsklinik für Kinder- und Jugendheilkunde - Ambulanz für Adipositas, Fettstoffwechselstörungen und Ernährungsmedizin) a confirmation was obtained from the Austrian Lead Ethics-Committee of the Medical University Vienna, Austria.

: Not applicable.

: The authors declare that they have no competing interests.