Received: 4 December 2020
Accepted: 6 April 2021
First Online: 13 April 2021
: Not applicable. Patients were not directly involved in the study. The present study is based on a retrospective analysis of pseudonymised health insurance claims data, and therefore no formal ethics committee approval was needed [CitationRef removed]. The data analysis followed the guidelines and recommendations for ensuring “Good Epidemiological Practice” [CitationRef removed] and the guidelines of “Good Practice Secondary Data Analysis” [CitationRef removed].
: Not applicable.
: The authors declare that they have no competing interests.