Assessment of sympathetic innervation in patients with dilated cardiomyopathy using I123-MIBG and the correlation with functional parameters - Koutelou, M; Theodorakos, A; Athanassopoulos, G; Tsapaki, V; Kouzoumi, A; Nygaren, E; Cokkinos, D (EUROPEAN JOURNAL OF NUCLEAR MEDICINE, 2001)