Funding for this research was provided by:
National Natural Science Foundation of China (81470916)
Sichuan Province Key Technology R&D Program (2018SZ0122)
Article History
Received: 30 March 2020
Accepted: 3 June 2020
First Online: 10 June 2020
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: The authors state that they have obtained appropriate institutional review board approval and have followed the principles outlined in the Declaration of Helsinki for all human or animal experimental investigations.
: Informed consent was obtained from all individual participants and legal guardians included in the study.
: The participant signed informed consent regarding publishing their data and photographs.