Text and Data Mining valid from 2019-09-11
Received: 22 May 2019
Accepted: 24 July 2019
First Online: 11 September 2019
Ethics approval and consent to participate
: The ethical committee of Baqiyatallah University of Medical Science approved the study at 6 June 2017. All of the participants signed the ethical consent approved by Baqiyatallah University of Medical Science.
: The authors declare that they have no competing interests.