Els van Meijel

156 Contributors’ statement Long-term posttraumatic stress following accidental injury in children and adolescents: results of a 2–4-year follow-up study Els van Meijel participated in the design and funding of the study, collected the data, performed the statistical analysis and drafted the manuscript; Maj Gigengack participated in the collection and interpretation of data and provided administrative and technical support; Eva Verlinden participated in the collection of data; Alida van der Steeg, Carel Goslings, Frank Bloemers and Jan Luitse provided all necessary support for the collection of the data and the interpretation of the medical data. Frits Boer participated in the design and funding of the study and provided study supervision. Martha Grootenhuis participated in the interpretation of data and provided study supervision. Ramón Lindauer participated in the design and funding of the study and provided study supervision. All authors participated in critical revision of themanuscript. Short and long-term parental posttraumatic stress after a child’s accident: prevalence and associated factors Els van Meijel participated in the design and funding of the study, collected the data, performed the statistical analysis and drafted the manuscript; Maj Gigengack participated in the collection and interpretation of data and provided administrative and technical support; Eva Verlinden participated in the collection of data; Alida van der Steeg, Carel Goslings, Frank Bloemers and Jan Luitse provided all necessary support for the collection of the data and the interpretation of the medical data. Frits Boer participated in the design and funding of the study and provided study supervision. Martha Grootenhuis participated in the interpretation of data and provided study supervision. Ramón Lindauer participated in the design and funding of the study and provided study supervision. All authors participated in critical revision of the manuscript. Comparing Three Diagnostic Algorithms of Posttraumatic Stress in Young Children Exposed to Accidental Trauma: an exploratory study Maj Gigengack participated in the design of the study, collected the data, performed the statistical analysis and drafted the manuscript; Els van Meijel participated in the design of the study, collection and interpretation of data and the statistical analysis; Eva Alisic participated in the interpretation of data; Ramón Lindauer participated in the design of the study and provided study supervision. All authors participated in critical revision of the manuscript.