Received: 15 April 2020
Accepted: 30 July 2020
First Online: 8 August 2020
Ethics approval and consent to participate
: We analyzed only clinical routine data from health records. Data were anonymized for the analyses. The responsible ethics committee takes the position that such studies do not require approval from an ethics committee (Medical Association of North Rhine [Ärztekammer Nordrhein], Germany, § 15 (1) Professional Code of Conduct of the North Rhine Medical Association [Berufsordnung für nordrheinische Ärztinnen und Ärzte]). The study is a retrospective analysis and not an interventional study. Therefore, it was not registered.
: Not applicable.
: The authors declare that they have no competing interests.