title: Ducks on sewage treatment ponds-Spas or death traps?
authors.affiliation: Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada.
authors.forename: Keith B
authors.initials: KB
authors.lastname: Tierney
authors.affiliation: Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada.
authors.forename: Patrick O
authors.initials: PO
authors.lastname: Welsh
authors.affiliation: Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada.
authors.forename: Cynthia A
authors.initials: CA
authors.lastname: Paszkowski