RT Journal Article SR Electronic T1 Gel Chromatography in the Analysis of 99mTc Radiopharmaceuticals JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 318 OP 319 VO 15 IS 4 A1 J. Steigman A1 H. P. Williams A1 P. Richards A1 E. Lebowitz A1 G. Meinken YR 1974 UL http://jnm.snmjournals.org/content/15/4/318.abstract AB