1. Johns Hopkins University School of Medicine, Baltimore, Maryland.
2. Howard University College of Medicine, Washington D.C.
3. Harvard University School of Public Health, Boston, Massachusetts.
4. MetroHealth Medical Center and Case Western Reserve University, Cleveland, Ohio.
5. Rush University Medical College, Chicago, Illinois.
6. University of California, Davis, Sacramento, California.
7. Social and Scientific Systems, Inc., Silver Spring, Maryland.
8. University Hospitals/Case Medical Center, Case Western Reserve University, Cleveland, Ohio.