Route selection for double balloon enteroscopy in patients with obscure gastrointestinal bleeding: Experience from a single center - Akyüz, Ümit; PATA, Cengiz; KALAYCI, Murat; ÖZDİL, Kamil and Altun, Hasan and KARİP, Bora and AKYÜZ, Filiz (Turkish Journal of Gastroenterology, 2012)