Ren, Zhengjia
Gao, Meng
Yang, Mark
Qu, Wei
Funding for this research was provided by:
Travis Research Institute
Article History
First Online: 10 March 2018
Compliance with Ethical Standards
:
: All researchers declare that we have no other conflict of interest.
: The study was approved by the Southwest Hospital in China
: Informed consent was obtained from all individual participants included in the study. Confidentiality and privacy of interviewees were maintained. All participants were noticed before the research that they can withdraw from the research at any time.