Funding for this research was provided by:
Foundation for the National Institutes of Health (D43 TW009101)
National Natural Science Foundation of China (81202290)
Text and Data Mining valid from 2018-07-04
Received: 4 December 2017
Accepted: 21 June 2018
First Online: 4 July 2018
Ethics approval and consent to participate
: This study was conducted in accordance with the Declaration of Helsinki, and the protocol was approved by the Human Research Ethics Committee of Central South University (CTXY-120033-3). Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.