Funding for this research was provided by:
Xinjiang Uygur Autonomous Region regional coordinated innovation project (2017E01031)
Deanship of Scientific Research at Princess Nourah bint Abdulrahman University (RGP-1438-0004)
Text and Data Mining valid from 2018-12-06
Received: 3 July 2018
Revised: 22 October 2018
Accepted: 29 November 2018
First Online: 6 December 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.