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Thienpont LM, Van Uytfanghe K, Beastall G, Faix JD, Ieiri T, Miller WG, Nelson JC, Ronin C, Ross HA, Thijssen JH, Toussaint B; IFCC Working Group on Standardization of Thyroid Function Tests.Thienpont LM, et al.Clin Chem. 2010 Jun;56(6):912-20. doi: 10.1373/clinchem.2009.140194. Epub 2010 Apr 15.Clin Chem. 2010.PMID: 20395623