Inverse relationship between cardiac accumulation of meta-l3lI-Iodobenzylguanidine (1-131-MIBG) and circulating catecholamines in suspected pheochromocytoma - Nakajo, M; Shapiro, B; Glowniak, J; Sisson, J. C.; Beierwaltes, W. H (J. nucl. Med, 1983)