Impact of an information video before colonoscopy on patient satisfaction and anxiety - Arabul, Mahmut; KANDEMİR, Altay and Çelik, Mustafa and Alper, Emrah and Akpınar, Zehra and Aslan, Fatih and VATANSEVER, Sezgin and Ünsal, Belkıs (Turkish Journal of Gastroenterology, 2012)