1. Washington University School of Medicine, Box 8134, 4940 Children's Place, Saint Louis, Missouri 63110
2. Department of Biostatistics, University of Washington, Seattle, Washington 98105
3. Department of Psychiatry, University of Michigan School of Medicine, Ann Arbor, Michigan 48109
4. Administrative Supervisor for Pupil Personnel Services, Capital Area Intermediate Unit, Harrisburg, Pennsylvania 17105