Liang, Yajun
Rausch, Christian
Laflamme, Lucie
Möller, Jette
Article History
Received: 7 June 2018
Accepted: 17 December 2018
First Online: 29 December 2018
Ethics approval and consent to participate
: This study was approved by the Stockholm Regional Ethical Review Board. All participants gave their informed consents by filling in the questionnaire and sending it back.
: Not applicable.
: The authors declare that they have no competing interests.
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