Funding for this research was provided by:
Health and Family Science Foundation of Shenzhen (201606007)
Sanming Project of Medicine in Shenzhen (SZSM201612078)
Article History
Received: 16 August 2017
Accepted: 18 July 2018
First Online: 30 July 2018
Compliance with ethical standards
:
: The author’s declare that they have no conflicts of interest.