1. Pennsylvania State College of Medicine, Hershey, Pennsylvania, USA.
2. Norton College of Medicine, SUNY Upstate Medical University, Syracuse, New York, USA.
3. Center for Psychiatry and Behavioral Medicine, Las Vegas, Nevada, USA.
4. Los Angeles Semel Institute, University of California, Los Angeles, California, USA.
5. Cambridge Health Alliance, Cambridge, Massachusetts, USA.
6. Massachisetts General Hospital, Boston, Massachusetts, USA.