RT Journal Article SR Electronic T1 Comparison of the Physical Characteristics of I-131 and I-123, with Respect to Differentiating the Relative Activity in the Kidneys JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 683 OP 688 VO 24 IS 8 A1 Clarke, Laurence P. A1 Qadir, Farhad A1 Al-Sheikh, Wajih A1 Sfakianakis, George A1 Serafini, Aldo N. YR 1983 UL http://jnm.snmjournals.org/content/24/8/683.abstract AB