title: Standardization of FT4 and harmonization of TSH measurements - a request for input from endocrinologists and other physicians.
authors.affiliation: Mass Spectrometry Reference Laboratory LAC, Gent University, Gent, Belgium.
authors.forename: Linda M
authors.initials: LM
authors.lastname: Thienpont
authors.affiliation: Clinical Chemistry and Immunology, Montefiore Medical Center, New York, NY, USA.|Pathology, Albert Einstein School of Medicine, New York, NY, USA.
authors.forename: James D
authors.initials: JD
authors.lastname: Faix
authors.affiliation: International Federation of Clinical Chemistry & Laboratory Medicine, Glasgow, UK.
authors.forename: Graham
authors.initials: G
authors.lastname: Beastall