Funding for this research was provided by:
Babol Noshirvani University of Technology (BNUT/370542/97)
Text and Data Mining valid from 2019-02-06
Received: 9 June 2018
Accepted: 24 January 2019
First Online: 6 February 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.Human and Animal Rights and Informed ConsentThis paper does not contain any studies with human participants or animals performed by any of the authors. Informed consent was obtained from all individual participants included in the study.