Guo, Yanhong
Wang, Qin
Lu, Chunyan
Fan, Pianpian
Li, Jing
Luo, Ximing
Chen, Decai http://orcid.org/0000-0002-7005-1298
Article History
Received: 29 January 2019
Accepted: 30 December 2019
First Online: 8 January 2020
Ethics approval and consent to participate
: This study was approved by the Medical Ethics Committee of Sichuan University, which agreed to waive the requirement for informed consent.
: This study was approved by the Medical Ethics Committee of Sichuan University, which agreed to waive the requirement for informed consent.
: This study did not have competing or any potential competing interests.