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Funding
Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (03ZZ0904A)
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Article History
Received: 8 October 2018
Accepted: 2 May 2019
First Online: 1 July 2019
Ethics approval and consent to participate
: Access to the data was granted and approved by the Scientific Institute of the AOK (WIdO), while access to the complete database was not possible, due to current data protection regulations. All analyses of this study are based on anonymized administrative claims data which never identify patients directly. As individuals are anonymous, the results presented here do not in any way affect the persons whose records were used. No ethical approval was required, therefore this study complies with the tenets of the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
