A Study for the Evaluation of Safety and Tolerability of Intravenous High-Dose Iron Sucrose in Patients with Iron Deficiency Anemia due to Gastrointestinal Bleeding - Schröder, O; Schrott, M; Blumenstein, I; Jahnel, J; Dignass, A U; Stein, J (Zeitschrift für Gastroenterologie, 2004)