The relationship between 174 G/C and -572 G/C of IL-6 gene polymorphisms and susceptibility of celiac disease in the Iranian population - Zeinab Barartabar; Abdolrahim Nikzamir; Majid Sirati-Sabet; Elham Aghamohammadi; Vahid Chaleshi; Mohammad Rostami Nejad; Hamid Asadzadeh-Aghdaei; Mohammad Reza Zali (Gastroenterology Review)