Article History
Received: 7 May 2020
Accepted: 17 November 2020
First Online: 25 November 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the Research Ethics Board of Southern Medical University on March 10th, 2020. Participants were provided with online information sheet and asked to sign a consent form prior to the investigations being undertaken.
: Not applicable.
: The authors declare that they have no competing interests.