Ashton, Kathryn
Schröder-Bäck, Peter
Clemens, Timo
Dyakova, Mariana
Stielke, Anna
Bellis, Mark A.
Article History
Received: 27 November 2019
Accepted: 13 April 2020
First Online: 1 May 2020
Ethics approval and consent to participate
: Not applicable. No ethical approval required for this systematic scoping review of existing evidence.
: Not applicable.
: The authors declare that they have no competing interests.