A. A. SOFI, C. FILIPIAK, T. SODEMAN, U. AHMAD, M. BAWANY, and I. DABOUL, “Retraction Notice - Comparison of esophageal placement of Bravo capsule system under direct endoscopic guidance with conventional placement method”, Turkish Journal of Gastroenterology, vol. 22, no. 3, pp. 243–248, Jan. 2011.