Funding for this research was provided by:
Received: 29 October 2019
Accepted: 7 February 2020
First Online: 17 February 2020
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Landesärztekammer Rheinland-Pfalz, 837.413.13 (9098-F). All patients gave their informed consent to participate in the study.
: Not applicable.
: Dr. Bork reports speaker fees from CSL Behring and Shire, outside the submitted work. Dr. Machnig is a full-time employee of CSL Behring GmbH, Marburg. The other authors have no other conflicts of interest to disclose.