RT Journal Article SR Electronic T1 Etiology, Diagnosis and Treatment of Thyroid Failure JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 317 OP 326 VO 20 IS 2 A1 Penn G. Skillern YR 1953 UL http://www.ccjm.org/content/20/2/317.abstract AB