Updates are available Correction dated 2020-01-27

Article History

Received: 4 February 2019

Accepted: 6 March 2019

First Online: 9 April 2019

Change Date: 27 January 2020

Change Type: Correction

Change Details: Following publication of the original article [1], an error in reference 18 was reported.

Ethics approval and consent to participate

: This study gained ethics approval from University College London REC on the 9th August 2018 (ref 8675/003), University of Antwerp REC on the 7th January 2019 (ref 18/50/589), University of Mainz REC on the 26th November 2018, Radboud University Medical Center REC on the 20th December 2018 (ref 2018–4949), Bern Ethics Committee on the 29th August 2018 (ref 2018–00710) and University of Bologna REC on the 25th January 2019 (ref 12,590). In case any protocol amendments are required, these will be reviewed by the study team before submission to the relevant committees, and the trial registry will be updated where necessary. Consent is obtained electronically through a series of check boxes, see section “Methods, Methods: Participants, interventions, and outcomes” for further detail.

: Not applicable.

: The authors declare that they have no competing interests.

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