1. Department of Health Behavior and Health Education, School of Public Health, University of Michigan, 1420Washington Heights, Ann Arbor,MI 48109-2029; phone: (734) 647-2739; fax: (734) 763-7379.
2. School of Public Health, Ohio State University, Columbus.
3. School of Social Work, University of Michigan, Ann Arbor.
4. Community Health and Social Services (CHASS), Detroit, Michigan.