Su, Yuxi
Xie, Yan
Kang, Xiaopeng
Nan, Guoxin
Funding for this research was provided by:
Chongqing science and technology commission project (cstc2017jcyjAX0010)
Chongqing science and technology commission project (cstc2018jcyjAX0143)
The Fifth batch of outstanding talents support program for universities in Chongqing Natural Science ([2017]29)
Chongqing Yubei District science and technology commission project (2019-10)
Article History
Received: 16 May 2019
Accepted: 8 July 2019
First Online: 12 July 2019
Ethics approval and consent to participate
: The ethics committee of the Children’s Hospital of Chongqing Medical University approved the study.
: Informed consent for publication of photographs was obtained from all subjects.
: The authors declare that they have no competing interests.