RT Journal Article SR Electronic T1 In Memoriam: Robert E. O’Mara, MD, 1933–2015 JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 12N OP 12N VO 56 IS 7 YR 2015 UL http://jnm.snmjournals.org/content/56/7/12N.2.abstract AB