Received: 9 October 2019
Accepted: 9 June 2020
First Online: 26 June 2020
Ethics approval and consent to participate
: The study (2014–026, Amendment 4) was approved by the local ethical committee responsible for the University Hospital Basel: Ethics Committee for North-Central Switzerland. Study participants provided oral and written consent to participate in the study.
: Study participants agreed that their data could be published anonymously.
: There are no competing interests to report for all authors except JHJ Allum who has worked as a consultant for the company manufacturing the equipment used to measure balance control in this study.