title: Urine free cortisol analysis by automated immunoassay and high-performance liquid chromatography for the investigation of Cushing's syndrome: a comment on the paper of Ching et al.
authors: Martin
authors: M
authors: Fenske
mesh_terms: D001331:Automation; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D003480:Cushing Syndrome / Q000175:diagnosis* / Q000652:urine; D006801:Humans; D007118:Immunoassay / Q000379:methods*