Akdogan M, Onal I K, Kurt M, Yalinkilic Z M, Sayilir A, Karaman K, Celep B, Okten R S
Department of Gastroenterology, Turkiye Yuksek Ihtisas Teaching and Research Hospital, Ankara, Turkey.
Endoscopy. 2010;42 Suppl 2:E7-8. doi: 10.1055/s-0029-1215410. Epub 2010 Jan 11.