title: Authors' reply.
authors.affiliation: Michel L. A. Dückers, PhD, NIVEL-Netherlands Institute for Health Services Research, Utrecht; and Impact - National Knowledge and Advice Centre for Psychosocial Care Concerning Critical Incidents, Arq Psychotrauma Expert Group, Diemen, The Netherlands. Email: m.duckers@nivel.nl; Eva Alisic, PhD, Monash University Accident Research Centre, Melbourne, Australia; Chris R. Brewin, PhD, Department of Clinical, Educational and Health Psychology, University College London, London, UK.
authors.forename: Michel L A
authors.initials: ML
authors.lastname: Dückers
authors.affiliation: Michel L. A. Dückers, PhD, NIVEL-Netherlands Institute for Health Services Research, Utrecht; and Impact - National Knowledge and Advice Centre for Psychosocial Care Concerning Critical Incidents, Arq Psychotrauma Expert Group, Diemen, The Netherlands. Email: m.duckers@nivel.nl; Eva Alisic, PhD, Monash University Accident Research Centre, Melbourne, Australia; Chris R. Brewin, PhD, Department of Clinical, Educational and Health Psychology, University College London, London, UK.
authors.forename: Eva
authors.initials: E
authors.lastname: Alisic
authors.affiliation: Michel L. A. Dückers, PhD, NIVEL-Netherlands Institute for Health Services Research, Utrecht; and Impact - National Knowledge and Advice Centre for Psychosocial Care Concerning Critical Incidents, Arq Psychotrauma Expert Group, Diemen, The Netherlands. Email: m.duckers@nivel.nl; Eva Alisic, PhD, Monash University Accident Research Centre, Melbourne, Australia; Chris R. Brewin, PhD, Department of Clinical, Educational and Health Psychology, University College London, London, UK.
authors.forename: Chris R
authors.initials: CR
authors.lastname: Brewin