Magnetic Resonance Angiography for Monitoring Prophylactic Endoscopic Treatment of High Risk Esophageal Varices - Imazu, H.; Matsui, T.; Noguchi, R.; Asada, K.; Miyamoto, Y.; Kawata, M.; Nakayama, M.; Matsuo, N.; Matsumura, M.; Fukui, H. (Endoscopy, 2000)