Funding for this research was provided by:
Competence Network Obesity of the German Federal Ministry of Education and Research (01GI1121B)
Competence Network Diabetes Mellitus of the German Federal Ministry of Education and Research (01GI1110C)
Text and Data Mining valid from 2020-01-13
Received: 16 September 2019
Accepted: 27 December 2019
First Online: 13 January 2020
Ethics approval and consent to participate
: The studies have been conducted according to the principles of the Declaration of Helsinki and have been approved by local ethics committees and written informed consent has been obtained. There were no participants under 16 years old and hence no written informed consent from a parent or guardian was necessary.KORA (Helmholtz Zentrum München): Ethics committee of the Bavarian Medical Association and the Bavarian commissioner for data protection and privacy (approval number: 06068).CARLA (Martin-Luther-University): Ethics committee of the Medical Faculty of Martin-Luther-University and the state data privacy commissioner of Saxony-Anhalt (approval number: 164/12.10.05/1).RECALL (University Clinics Essen): Ethics committee of the Medical Faculty of the University Duisburg-Essen (approval number: 99-69-1200).DHS (University of Münster): Ethics committee of the University of Münster and the Westphalian Chamber of Physicians in Münster (approval number: 3VIIBerger).SHIP (Ernst-Moritz-Arndt University Greifswald): Ethics committee of the Medical Faculty of the Ernst-Moritz-Arndt University Greifswald (approval number: III UV 73/01/BB 39/09).
: Not applicable.
: The authors declare that they have no competing interests.