Funding for this research was provided by:
China Medical Board (13-161)
the Amsterdam Health and Technology Institute
the China International Center on Chronic Disease Prevention
Text and Data Mining valid from 2018-09-28
First Online: 28 September 2018
Compliance with Ethical Standards
: The authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
: The study was approved by China Medical University, Ningxia Medical University, and Chongqing Medical University’s ethics committees and was registered at Clinicaltrials.gov (NCT02247921).
: Informed consent was obtained from all participants for being included in the study.