title: Erratum to: Highly diverse nirK genes comprise two major clades that harbour ammonium-producing denitrifiers.
authors.affiliation: Laboratory of Microbiology (LM-UGent), Department of Biochemistry and Microbiology, Ghent University, K.L. Ledeganckstraat 35, B-9000, Ghent, Belgium.
authors.forename: Helen
authors.initials: H
authors.lastname: Decleyre
authors.affiliation: Laboratory of Microbiology (LM-UGent), Department of Biochemistry and Microbiology, Ghent University, K.L. Ledeganckstraat 35, B-9000, Ghent, Belgium.
authors.forename: Kim
authors.initials: K
authors.lastname: Heylen
authors.affiliation: Laboratory of Microbiology (LM-UGent), Department of Biochemistry and Microbiology, Ghent University, K.L. Ledeganckstraat 35, B-9000, Ghent, Belgium.
authors.forename: Bjorn
authors.initials: B
authors.lastname: Tytgat
authors.affiliation: Laboratory of Microbiology (LM-UGent), Department of Biochemistry and Microbiology, Ghent University, K.L. Ledeganckstraat 35, B-9000, Ghent, Belgium. Anne.Willems@UGent.be.
authors.forename: Anne
authors.initials: A
authors.lastname: Willems