RT Journal Article SR Electronic T1 Clinical Assessment of a Radioimmunoassay for Free Thyroxine Using a Modified Tracer JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 498 OP 504 VO 24 IS 6 A1 Daniel W. Chan A1 John M. Waud A1 Tah Hsiung Hsu YR 1983 UL http://jnm.snmjournals.org/content/24/6/498.abstract AB