Received: 6 July 2019
Accepted: 25 March 2020
First Online: 8 June 2020
Ethics approval and consent to participate
: This current prospective, observational cohort study is approved by the North Denmark Region Committee on Health Research Ethics (N-20160020). Any modifications to the protocol which may impact on the conduct of the study, may affect patient safety, including changes of study objectives, study design, patient population, sample sizes, study procedures, must be reported to the Ethical committee and updated at ExternalRef removed identifier: ExternalRef removed. An annually safety report to the Etichal Committee account for any adverse event occurred during baseline test. All participants were provided with information about the study aim and procedure prior to participation. Informed written consent was obtained from all participants.
: Not applicable.
: All authors declare that they have no competing interests.