1. Faculty of Health Sciences, University of Buea, Buea, Cameroon
2. Oslo University Hospital, Oslo, Norway
3. Emergency Center of Yaoundé, Yaoundé, Cameroon
4. Gendarmerie Road Traffic Group No1, National Gendarmerie, Yaoundé, Cameroon
5. AAA Foundation for Traffic Safety, Washington, DC
6. Maastricht University, Maastricht, The Netherlands
7. School of Health Sciences, Catholic University of Central Africa (ESS-UCAC), Yaoundé, Cameroon