Wang, Yiding
Liu, Jinzhi
Xiong, Ribo
Liu, Yan
Article History
Received: 26 January 2021
Accepted: 9 March 2021
First Online: 28 May 2021
Change Date: 9 June 2021
Change Type: Update
Change Details: Several language errors have been corrected.
Declarations
:
: Ethical approval was obtained from the Research Ethics Board of Southern Medical University on 12th January 2018. Participants were provided with a participant information sheet and asked to sign a consent form prior to the interviews being undertaken. For participant under 18 years old, written informed consent was obtained from their parents/guardians while the participants provided written assent. All protocols are carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.