title: Liquid chromatographic determination of a quaternary ammonium-steroidal type drug in plasma with post-column extraction.
authors.affiliation: Department of Analytical Chemistry, Free University, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands.
authors.forename: J H
authors.initials: JH
authors.lastname: Wolf
authors.forename: C
authors.initials: C
authors.lastname: De Ruiter
authors.forename: U A
authors.initials: UA
authors.lastname: Brinkman
authors.forename: R W
authors.initials: RW
authors.lastname: Frei