PT - JOURNAL ARTICLE ED - , TI - 15/30 DP - 1991 Nov 01 TA - Journal of Nuclear Medicine PG - 2168--2168 VI - 32 IP - 11 4099 - http://jnm.snmjournals.org/content/32/11/2168.short 4100 - http://jnm.snmjournals.org/content/32/11/2168.full SO - J Nucl Med1991 Nov 01; 32