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Article History

Received: 6 June 2019

Revised: 5 July 2019

Accepted: 12 July 2019

First Online: 6 August 2019

Compliance with ethical standards

:

: Mr. Schwaibold reports to be employee of Löwenstein Medical Technology, the manufacturer of the evaluated device. Responsibilities: R&D and clinical trials. No ownership or shares of the company, nor any direct revenues depending on the success of the device.Mrs. Schäfer reports to be employee of Löwenstein Medical Technology, the manufacturer of the evaluated device.Dr. Alshut reports to be employee of Löwenstein Medical Technology, the manufacturer of the evaluated device. Responsibilities: R&D and new devices. No ownership or shares of the company, nor any direct revenues depending on the success of the device.Mr. Grimm reports to be employee of Löwenstein Medical Technology, the manufacturer of the evaluated device. Responsibilities: clinical trials. No ownership or shares of the company, nor any direct revenues depending on the success of the device.Mr. Herkenrath, Dr. Treml, Mr. Anduleit, Mrs. Richter, Dr. Pietzke-Calcagnile, and Dr. Hagmeyer declare that they have no conflict of interest.Prof. Randerath reports grants from Philips Respironics, grants from Inspire, grants from Resmed, grants from Löwenstein Medical, grants from Weinmann, outside the submitted work.The research site has received financial support from Löwenstein Medical GmbH & Co. KG, Bad Ems, Germany, to cover personnel and material expenses for conducting this study.

: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee (Ethics Committee of the Medical Association of North Rhine, reference no. 2016253) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

: Informed consent was obtained from all individual participants included in the study.