AD HOC CONSULTANTS 
PARKMAN, Robertson, M.D. 
Division of Research Immunology- 
Bone Marrow Transplantation 
Childrens Hospital of Los Angeles 
4650 Sunset Blvd. Room 226 
Los Angeles, California 90027 
213 669-2546 
WALTERS, LeRoy, Ph.D. 
Center for Bioethics 
Kennedy Institute of Ethics 
Georgetown University 
1437 37th St., N.W., Room 215 
Washington, D.C. 20057 
202 687-6771 
Recombinant DNA Research, Volume 14 
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