Received: 4 June 2019
Accepted: 23 December 2019
First Online: 3 January 2020
Ethics approval and consent to participate
: The patient gave informed written consent for serial blood sample collection for biomarker analysis and the study was approved by Kiel University’s medical faculty ethics board (#A110/99).
: Written informed consent for publication was obtained from the patient.
: The authors declare that they have no competing interests.