title: Authors' reply.
authors.affiliation: John Tully, Forensic Psychiatry Service, South London and Maudsley NHS Foundation Trust, email: john.tully@slam.nhs.uk; Dave Hearn, Thomas Fahy, Forensic Psychiatry Service, South London and Maudsley Foundation NHS Trust, UK.
authors.forename: John
authors.initials: J
authors.lastname: Tully
authors.affiliation: John Tully, Forensic Psychiatry Service, South London and Maudsley NHS Foundation Trust, email: john.tully@slam.nhs.uk; Dave Hearn, Thomas Fahy, Forensic Psychiatry Service, South London and Maudsley Foundation NHS Trust, UK.
authors.forename: Dave
authors.initials: D
authors.lastname: Hearn
authors.affiliation: John Tully, Forensic Psychiatry Service, South London and Maudsley NHS Foundation Trust, email: john.tully@slam.nhs.uk; Dave Hearn, Thomas Fahy, Forensic Psychiatry Service, South London and Maudsley Foundation NHS Trust, UK.
authors.forename: Thomas
authors.initials: T
authors.lastname: Fahy
mesh_terms: D005555:Forensic Psychiatry; D040362:Geographic Information Systems / Q000706:statistics & numerical data*; D006801:Humans; D012308:Risk Management / Q000379:methods*