Moeinadin Safavi ^1* , Pejman Rohani ², Nooshin Zaresharifi <sup>1

1</sup> Pathology Department, Children’s Medical Center, Tehran University of Medical Sciences, Tehran, Iran
² Pediatric Gastroenterology Department, Hepatology and Nutrition Research Center, Research Institute for Children Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran

*Corresponding Author: Moeinadin Safavi, MD; Pathology Department, Children’s Medical Center, Tehran University of Medical Sciences, Tehran, Iran. Tel: +98-21-61472404; Fax: +98-21-66948780; Email: moein.safavi@gmail.com