Goulas, S. Triantafyllidou, K. Karagiannis, S. Nicolaou, P. Galanis, P. Vafiadis, I. Tzivras, M. Mavrogiannis, C., Capsule endoscopy in the investigation of patients with portal hypertension and anemia, The Canadian Journal of Gastroenterology, (22), 469-474, 2008, Pulsus Group Inc., 0835-7900