[1] Univ Illinois, Dept Psychiat, Mental Hlth Serv Res Program, Chicago, IL 60603 USA
[2] Vet Affairs NE Program Evaluat Ctr, W Haven, CT USA
[3] Yale Univ, Sch Med, New Haven, CT 06520 USA
[4] Ctr Mental Hlth Serv, Homeless Programs Branch, Rockville, MD USA