1 RAND Corporation, 20 Park Plaza, Suite 920, Boston, MA, 02116, USA. mhorvitz@rand.org.
2 Department of Psychiatry, Cambridge Health Alliance, Harvard Medical School, 1493 Cambridge Street, Cambridge, MA, 02139, USA. mhorvitz@rand.org.
3 Department of Health, Office of Mental Health, 44 Holland Avenue, Albany, New York State, NY, 12229, USA.
4 Department of Epidemiology and Biostatistics, School of Public Health, University at Albany, State University of New York, 1 University Pl, Rensselaer, NY, 12144, USA.
5 RAND Corporation, 1776 Main Street, Santa Monica, CA, 90407, USA.
6 Department of Health Care Policy, Harvard Medical School, 180 Longwood Avenue, Boston, MA, 02115, USA.
7 Department of Biostatistics, Harvard School of Public Health, 677 Huntington Ave, Boston, MA, 02115, USA.