Funding for this research was provided by:
Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology And Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Text and Data Mining valid from 2018-08-10
Received: 20 February 2018
Accepted: 6 August 2018
First Online: 10 August 2018
Compliance with ethical standards
: This study was approved by the Ethics Committee of Shahid Beheshti University of Medical Sciences.
: The authors declare that they have no conflict of interest.