title: Improved method for measurement of retinol and didehydroretinol in the modified relative dose response test to detect vitamin A deficiency.
authors.forename: Juergen G
authors.initials: JG
authors.lastname: Erhardt
authors.forename: Hans K
authors.initials: HK
authors.lastname: Biesalski
authors.forename: Lucie C
authors.initials: LC
authors.lastname: Malaba
authors.forename: Neal E
authors.initials: NE
authors.lastname: Craft
mesh_terms: D002851:Chromatography, High Pressure Liquid; D004305:Dose-Response Relationship, Drug; D006801:Humans; D014801:Vitamin A / Q000031:analogs & derivatives* / Q000097:blood*
chemical_list: C024366:vitamin A2; D014801:Vitamin A