RT Journal Article SR Electronic T1 Role of Reference Levels in Nuclear Medicine: A Report of the SNMMI Dose Optimization Task Force JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1960 OP 1964 DO 10.2967/jnumed.115.160861 VO 56 IS 12 A1 Alessio, Adam M. A1 Farrell, Mary Beth A1 Fahey, Frederic H. YR 2015 UL http://jnm.snmjournals.org/content/56/12/1960.abstract AB