Bitter, Thomas
Ă–zdemir, Burak
Fox, Henrik
Horstkotte, Dieter
Oldenburg, Olaf
Article History
Received: 19 July 2017
Revised: 28 February 2018
Accepted: 1 March 2018
First Online: 10 April 2018
Compliance with ethical standards
: The study was approved by the Ethical Review Board of the Ruhr University, Bochum, and has therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
: Olaf Oldenburg reports personal fees from ResMed, personal fees from LivaNova, personal fees from Novartis, and personal fees from Bayer, outside the submitted work. The other authors declare that they have no conflicts of interest.