PT - JOURNAL ARTICLE ED - , TI - Works-in-Progress DP - 1991 Sep 01 TA - Journal of Nuclear Medicine PG - 1835--1844 VI - 32 IP - 9 4099 - http://jnm.snmjournals.org/content/32/9/1835.short 4100 - http://jnm.snmjournals.org/content/32/9/1835.full SO - J Nucl Med1991 Sep 01; 32