Zhang, Xuan
Lan, Liang
Chan, Jacky C. P.
Zhong, Linda L. D.
Cheng, Chung-Wah
Lam, Wai-Ching
Tian, Ran
Zhao, Chen
Wu, Tai-Xiang
Shang, Hong-Cai
Lyu, Ai-Ping
Bian, Zhao-Xiang http://orcid.org/0000-0001-6206-1958
Article History
Received: 14 January 2020
Accepted: 8 July 2020
First Online: 17 July 2020
Ethics approval and consent to participate
: Since this research does not use health data of individuals, ethics approval is not required according to the Measures for the Ethical Review of Biomedical Research Involving Humans, issued by the China National Health and Family Planning Commission in 2016. Our study is started in 2017, so we followed this ethical guideline and precluded the need for ethics approval. We obtained the written consent of participants before the survey according to the General Data Protection Regulations (GDPR).
: Not applicable.
: The authors declare that they have no competing interests.