Received: 24 February 2019
Accepted: 24 February 2020
First Online: 5 March 2020
Ethics approval and consent to participate
: This study was conducted in accordance with ethical principles for human studies and approved by the local ethics committee (Ethics Committee of the Hamburg Chamber of Physicians MC-039/16, 04. May 2016). Written informed consent was obtained from the patient or the proxy. We confirm that the ethics committee approved that consent could be waived when patients died before consent could be obtained or lacked the capacity to give consent and where no proxy was available, due to the observational character of the study.
: Not applicable.
: MDC, HP, FF, HL and CB: The authors declare that they have no competing interests.AA reports honoraria as speaker from Bayer Vital.JF reports personal fees from Cerenovus, Penumbra, Route 92 Medical, grants and personal fees from Acandis, Medtronic, Microvention.CG reports honoraria as speaker and/or scientific advisory board member from Actitor Biotech, Amgen, Bayer Healthcare, Boehringer Ingelheim, Prediction Biosciences, Sanofi Aventis.GT7 reports personal fees from Acandis, grants and personal fees from Bayer, personal fees from Boehringer Ingelheim, personal fees from Bristol-Myers Squibb/Pfizer, personal fees from Daichi Sankyo, personal fees from Stryker, outside the submitted work.