RT Journal Article SR Electronic T1 Accuracy in Using Dual-Isotope Schilling Test to Measure Urine Samples: A Multicenter Study JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 1659 OP 1665 VO 36 IS 9 A1 Krynyckyi, Borys R. A1 Zuckier, Lionel S. YR 1995 UL http://jnm.snmjournals.org/content/36/9/1659.abstract AB