Funding for this research was provided by:
Received: 6 October 2020
Accepted: 17 March 2021
First Online: 26 March 2021
: The retrospective study protocol followed the principles of the Declaration of Helsinki and was approved by the Institutional Review Board of the Ludwig Maximilians University Munich (approval number: 748-15).
: Not applicable.
: JH is also an employee of Sandoz/Hexal, which neither affected the conception and conduction of the study nor the content of this manuscript.