1. Co-Director, Institute for Studies of Destructive Behaviors and the Suicide Prevention Center, Los Angeles, CA and clinical professor, Department of Psychiatry, University of California at Los Angeles, School of Medicine, US.
2. Behavioral scientist, Institute for Studies of Destructive Behaviors and the Suicide Prevention Center, Los Angeles, CA and behavioral science consultant, Medical Examiner/Coroner's Office, County of Los Angeles, US.
3. Data analyst, Institute for Studies of Destructive Behaviors and the Suicide Prevention Center, Los Angeles, CA, US.