1. Catholic University of Central Africa, Yaoundé, Cameroon
2. Recherche Santé et Développement, Yaoundé, Cameroon
3. Douglas Mental Health University Institute, Montreal, QC, Canada
4. Sunnybrook Research Institute, Toronto, ON, Canada
5. University of Toronto, Department of Surgery, Toronto, ON, Canada
6. Institute for Clinical Evaluative Sciences, Toronto, ON, Canada