Text and Data Mining valid from 2018-07-17
Received: 29 September 2017
Accepted: 25 June 2018
First Online: 17 July 2018
Ethics approval and consent to participate
: The survey of data in this study followed the cohort study design. The Ethical Committee of the Eidgenössische Technische Hochschule Zurich endorsed the study design protocol (EK 2015-N-27) prior to participant acquisition. All participants received written information on the course of study and provided written, informed consent prior to starting measurements. This study was performed according to the Declarations of Helsinki.
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