Text and Data Mining valid from 2018-01-20
Accepted: 10 January 2018
First Online: 20 January 2018
Compliance with Ethical Standards
: Reyhaneh Shams Khozani, Delavar Shahbazzadeh, Naser Harzandi, Mohammad Mehdi Feizabadi, and Kamran Pooshang Bagheri declare that they have no conflict of interest.
: This article does not contain studies with human participants or animals performed by any of the authors.