1. General Clinical Research Center, School of Medicine, University of California, Irvine, CA, USA.
2. Niigata University, Department of Psychiatry, Clinical Pharmacology Program, Graduate School of Medical and Dental Sciences, Niigata, Japan.
3. VA Long Beach Medical Center, School of Medicine, University of California, Irvine, CA, USA.
4. Université de Montréal, Groupe de recherche en bioéthique & Département de Médicine Sociale et Préventive, Montréal, Québec, Canada.