Li, Bo
Zou, Yunchun http://orcid.org/0000-0002-0399-283X
Li, Liwen
Deng, Hongwei
Mi, Wei
Wang, Xing
Yin, Ximin
Article History
Received: 18 April 2019
Accepted: 15 August 2019
First Online: 20 August 2019
Ethics approval
: The study was approved by the Medical Ethics Committee of North Sichuan Medical College and supervised throughout the process.
: Not applicable.
: The authors declare that they have no competing interests.