RT Journal Article SR Electronic T1 Evaluation of T4 radioimmunoassay as a screening test for thyroid function JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 1 OP 7 VO 44 IS 1 A1 Manjula S. Kumar A1 Ali M. Safa A1 Sharad D. Deodhar A1 O. Peter Schumacher YR 1977 UL http://www.ccjm.org/content/44/1/1.abstract AB