Lin, Houwei
Zeng, Xiaoyan
Wang, Qian
Li, Yinnan
Sun, Bin
Wang, Ying
Wang, Hang
Article History
Received: 24 June 2019
Accepted: 20 November 2019
First Online: 2 December 2019
Compliance with ethical standards
:
: All authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants involved in invasive experiments, or animals performed by any of the authors, although some volunteers provided hair samples. The study was conducted under the guidelines for the protection of human subjects and the subject agreed to participate in the study through informed consent.