Declarations
Funding: This study was funded by Chinese national key clinical
specialty construction programs and the natural science foundation of
Fujian province, China (Grant No. 2017Y91030022), and Startup Fund for
scientific research, Fujian Medical University (Grant number:
2017XQ1035).
Conflict of Interest: All authors declare that they have no conflict of
interest.
Informed consent: Informed consent was obtained from all individual
participants included in the study.