Wang, Yan
Luo, Biru
Wu, Xiaoqin
Li, Xiaoxia
Liao, Shujuan
Article History
Received: 29 November 2021
Accepted: 25 April 2022
First Online: 7 May 2022
Declarations
:
: The protocol for this trial was approved by Ethical Review Board of Ya’ an Polytechnic College. At the beginning of the study, participant was informed that the study was voluntary and they had the rights to quit at any time. Written informed consent was obtained from all individual participants included in the study. Each participant who completed the whole study were rewarded supermarket vouchers totaling 50 Yuan. The procedures used in this study adhere to the tenets of the Declaration of Helsinki. This study had been registered on 23/01/2021 (clinical trial registration number: ChiCTR2100042534).
: Not applicable.
: The authors declare that they have no competing interests.