PT - JOURNAL ARTICLE AU - Michael E. Phelps TI - Comments and Perspectives DP - 2004 Oct 01 TA - Journal of Nuclear Medicine PG - 1601--1601 VI - 45 IP - 10 4099 - http://jnm.snmjournals.org/content/45/10/1601.short 4100 - http://jnm.snmjournals.org/content/45/10/1601.full SO - J Nucl Med2004 Oct 01; 45