- Correspondence to Dr Mohammad Hassan Emamian, 7 Tir SQ, Shahroud University of Medical Sciences, Shahroud, Iran ; ,
- Received 4 April 2017
- Revised 7 August 2017
- Accepted 16 August 2017
- Published online 31 August 2017.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.