(1)
ERSÖZ, F.; TOROS, A. B.; AYDOĞAN, G.; BEKTAŞ, H.; ÖZCAN, Özhan; ARIKAN, S. Assessment of Anxiety Levels in Patients During Elective Upper Gastrointestinal Endoscopy and Colonoscopy. Turkish Journal of Gastroenterology 2010, 21, 29-33.