Text and Data Mining valid from 2017-12-01
Received: 28 August 2017
Accepted: 3 November 2017
First Online: 6 December 2017
Change Date: 7 December 2017
Change Type: Correction
Change Details: In the HMTL, authors Xiao-chen Bai and Youxing Jiang were reversed in the author list.
: The authors declare no competing financial interests.