Chen, Pengyu
Luo, Li
Gao, Hongyan
Wu, Jian
Wang, Yudan
He, Guanglin
Han, Yanyan
Article History
Received: 13 December 2018
Accepted: 1 April 2019
First Online: 15 April 2019
Compliance with ethical standards
: This study had been approved by the Ethics Committee of the Zunyi medical university. Informed consent was obtained from volunteers before sample collection.
: The authors declare that they have no competing interests.