Evaluation of urinary neutrophil gelatinase-associated lipocalin as a biomarker in pediatric and adult patients with ureteropelvic junction obstruction - KAYA, CEVDET; ŞAHİN, BAHADIR; TANIDIR, YILÖREN; ŞEKERCİ, ÇAĞRI AKIN; ŞİMŞEK, FERRUH (My University, 2017)