Text and Data Mining valid from 2018-05-10
Received: 22 January 2018
Revised: 8 April 2018
Accepted: 19 April 2018
First Online: 10 May 2018
Compliance with ethical standards
: Participants were fully informed about the study and signed a written informed consent. The ethics committee of Baqiyatallah University of Medical Sciences approved this study.