1. University of Washington and Fred Hutchinson Cancer Research Center, Seattle, Washington
2. M. D. Anderson Cancer Center, University of Texas, Houston, Texas
3. Applied Logic Associates, Inc., Houston, Texas
4. University of Texas, Houston, Texas
5. The Upjohn Company, Kalamazoo, Michigan
6. Biopharmaceutical Research Consultants, Inc., Ann Arbor, Michigan
7. * Previous affiliation: Warner-Lambert Company, Ann Arbor, Michigan.