Funding for this research was provided by:
Union Project of Luzhou City and the Southwest Medical University (No.14JC0144, 2013LZLY- J40)
Article History
Received: 6 May 2019
Accepted: 5 July 2019
First Online: 29 July 2019
Compliance with ethical standards
:
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: For this type of study, informed consent is not required.