Zhang, Ning-Ning
Wang, Guang-Wei
Zuo, Na
Yang, Qing
Article History
Received: 22 August 2021
Accepted: 22 November 2021
First Online: 8 December 2021
Declarations
:
: This study was approved by the by the Human Ethics Committees of Shengjing Hospital of China Medical University on Mar. 2016 (2016PS26J). All methods in this study were performed in accordance with the relevant guidelines and regulations (Declaration of Helsinki).All participants provided written, informed consent by signing a study consent form. For those who were illiterate, the contents of the consent form were read to them in local language by a research assistant before they appended a thumb print. The informed consent procedure is also approved by the Ethics Committees of Shengjing Hospital of China Medical University.
: All participants provided consent to the publication of this study.
: The authors declare that they have no competing interests.