title: Authors' reply.
authors.affiliation: Katherine M Auty, David P Farrington, Institute of Criminology, Cambridge University; Jeremy W Coid, Violence Prevention Research Unit, Barts and the London School of Medicine and Dentistry, Queen Mary College, University of London. Email: ka404@cam.ac.uk.
authors.forename: Katherine M
authors.initials: KM
authors.lastname: Auty
authors.affiliation: Katherine M Auty, David P Farrington, Institute of Criminology, Cambridge University; Jeremy W Coid, Violence Prevention Research Unit, Barts and the London School of Medicine and Dentistry, Queen Mary College, University of London. Email: ka404@cam.ac.uk.
authors.forename: David P
authors.initials: DP
authors.lastname: Farrington
authors.affiliation: Katherine M Auty, David P Farrington, Institute of Criminology, Cambridge University; Jeremy W Coid, Violence Prevention Research Unit, Barts and the London School of Medicine and Dentistry, Queen Mary College, University of London. Email: ka404@cam.ac.uk.
authors.forename: Jeremy W
authors.initials: JW
authors.lastname: Coid
mesh_terms: D000987:Antisocial Personality Disorder; D016241:Child of Impaired Parents / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male