Article History
Received: 5 July 2018
Revised: 5 September 2018
Accepted: 6 September 2018
First Online: 11 October 2018
Compliance with ethical standards
:
: The authors confirm that there are no conflicts of interest.
: All procedures performed in studies involving animals were in accordance with the ethical standards of Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.