Wiesen, Martin H. J. http://orcid.org/0000-0002-9669-446X
Blaich, Cornelia
Taubert, Max
Jennissen, Veronika
Streichert, Thomas
Pfister, Roman
Michels, Guido
Article History
Received: 23 November 2017
Accepted: 18 January 2018
First Online: 28 January 2018
Compliance with ethical standards
: This study was approved by the local Ethics Committee of the University Hospital of Cologne (14-066) and carried out in accordance with the Helsinki declaration (DRKS00006002).
: Dr. Wiesen reports personal fees from Pfizer Pharma GmbH, outside the submitted work. All other authors report no conflicts of interest.