Fecal calprotectin concentration is increased in children with celiac disease: relation with histopathological findings - BALAMTEKİN, Necati; DEMİR, Hülya; BAYSOY, Gökhan; USLU, Nuray; ORHAN, Diclehan; AKÇÖREN, Zuhal; ÖZEN, Hasan; GÜRAKAN, Figen; SALTIK-TEMİZEL, İnci; YÜCE, Aysel (Turkish Journal of Gastroenterology, 2012)