@article {Fierens:September 2000:0923-2532:311,
	author = "Fierens C.",
	author = "Stockl D.",
	author = "Thienpont L.",
	author = "De Leenheer A.",
	title = "Towards a reference method for serum free thyroxine based on isotope dilution mass spectrometry",
	journal = "Immunoanalyse & Biologie Specialisee",
	volume = "15",
	year = "September 2000",
	abstract = "",
	pages = "311-317(7)",
	url = "http://www.ingentaconnect.com/content/els/09232532/2000/00000015/00000005/art80053"
	doi = "doi:10.1016/S0923-2532(00)80053-8"
}