PT - JOURNAL ARTICLE ED - , TI - Calendar DP - 1979 Apr 01 TA - Journal of Nuclear Medicine PG - 374--376 VI - 20 IP - 4 4099 - http://jnm.snmjournals.org/content/20/4/374.short 4100 - http://jnm.snmjournals.org/content/20/4/374.full SO - J Nucl Med1979 Apr 01; 20