E. TUTAR, G. KUTLUK, N. A. BAYRAK, Çiğdem ATAİZİ ÇELİKEL, E. PEHLİVANOĞLU, and D. ERTEM, “What is the diagnostic utility of endoscopic scoring systems in children?”, Turkish Journal of Gastroenterology, vol. 24, no. 1, pp. 22–29, Jan. 2013.