PT - JOURNAL ARTICLE ED - , TI - Calendar DP - 1977 Aug 01 TA - Journal of Nuclear Medicine PG - 864--866 VI - 18 IP - 8 4099 - http://jnm.snmjournals.org/content/18/8/864.short 4100 - http://jnm.snmjournals.org/content/18/8/864.full SO - J Nucl Med1977 Aug 01; 18