title: PFOS or PreFOS? Are perfluorooctane sulfonate precursors (PreFOS) important determinants of human and environmental perfluorooctane sulfonate (PFOS) exposure?
authors.affiliation: Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta, 10-102 Clinical Sciences Building, Edmonton, Alberta, CanadaT6G 2G3. Jon.Martin@ualberta.ca
authors.forename: Jonathan W
authors.initials: JW
authors.lastname: Martin
authors.forename: Brian J
authors.initials: BJ
authors.lastname: Asher
authors.forename: Sanjay
authors.initials: S
authors.lastname: Beesoon
authors.forename: Jonathan P
authors.initials: JP
authors.lastname: Benskin
authors.forename: Matthew S
authors.initials: MS
authors.lastname: Ross