%0 Journal Article %T Evaluation of a Candidate Reference Measurement Procedure for Serum Free Testosterone Based on Ultrafiltration and Isotope Dilution–Gas Chromatography–Mass Spectrometry %A , Van UytfangheKatleen %A Stöckl,, Dietmar %A Kaufman, Jean, M %A Fiers,, Tom %A Ross, H, Alec %A , De LeenheerAndré P %A Thienpont, Linda, M %J Clinical Chemistry %V 50 %N 11 %@ 0009-9147 %D 2004-11-01 %I Oxford Academic %~ DeepDyve