Funding for this research was provided by:
National Natural Science Foundation of China (21672169, 61605158)
Education Department of Shaanxi Province (12JS113)
RELATED DATA
IDENTIFIERS
PEER REVIEW METHOD
: Single-blind
PUBLICATION HISTORY
: Received 23 June 2018; Accepted 6 July 2018; Accepted Manuscript published 10 July 2018; Advance Article published 16 July 2018; Version of Record published 7 August 2018