1. International Agency for Research on Cancer, World Health Organization (IARC/WHO), 69372 Lyon, France
2. Department of Psychiatry, Loma Linda University, Loma Linda, CA 92350, USA
3. Patton State Hospital, University of California, Riverside, CA 92521, USA
4. Napa State Hospital, Napa, CA 94558, USA
5. Department of Psychiatry, University of California, Riverside, CA 92521, USA