PT - JOURNAL ARTICLE AU - R. P. Spencer TI - Author's Reply DP - 1972 Dec 01 TA - Journal of Nuclear Medicine PG - 951--951 VI - 13 IP - 12 4099 - http://jnm.snmjournals.org/content/13/12/951.2.short 4100 - http://jnm.snmjournals.org/content/13/12/951.2.full SO - J Nucl Med1972 Dec 01; 13