Received: 26 May 2020
Accepted: 5 July 2020
First Online: 3 August 2020
Ethics approval and consent to participate
: The present study follows the publication guidelines of the TR-DGU and is registered as TR-DGU project TR-DGU-2014-059.
: Data collection, coding, routing, and analysis were in accordance with the legal data protection policy.
: RL declares that his institution receives an ongoing financial support from AUC GmbH who is the owner of the TR-DGU; this service agreement includes the statistical support of scientific analyses of registry data. All other authors declare that they have no competing interests.