About the Authors

Niels De Brier

Contributed equally to this work with: Niels De Brier, Stijn Stroobants

Roles Data curation, Formal analysis, Investigation, Methodology, Writing – original draft

Niels.Debrier@rodekruis.be

Affiliation Centre for Evidence-Based Practice, Belgian Red Cross, Mechelen, Belgium

Stijn Stroobants

Contributed equally to this work with: Niels De Brier, Stijn Stroobants

Roles Conceptualization, Data curation, Investigation, Validation, Writing – review & editing

Affiliation Humanitarian Services, Belgian Red Cross, Mechelen, Belgium

Philippe Vandekerckhove

Roles Conceptualization, Funding acquisition, Supervision, Validation, Writing – review & editing

Affiliations Belgian Red Cross, Mechelen, Belgium, Department of Public Health and Primary Care, Faculty of Medicine, KU Leuven, Leuven, Belgium

Emmy De Buck

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Supervision, Writing – original draft

Affiliations Centre for Evidence-Based Practice, Belgian Red Cross, Mechelen, Belgium, Department of Public Health and Primary Care, Faculty of Medicine, KU Leuven, Leuven, Belgium, Cochrane First Aid, Mechelen, Belgium

Competing Interests

I have read the journal's policy and the authors of this manuscript have the following competing interests: the activities of the Belgian Red Cross include the provision of psychosocial first aid to laypeople. This does not alter our adherence to PLOS ONE policies on sharing data and materials.