[1] VIRGINIA COMMONWEALTH UNIV,MED COLL VIRGINIA,DEPT SURG,RICHMOND,VA 23298
[2] VIRGINIA COMMONWEALTH UNIV,MED COLL VIRGINIA,DEPT PEDIAT,RICHMOND,VA 23298
[3] VIRGINIA COMMONWEALTH UNIV,MED COLL VIRGINIA,DEPT INTERNAL MED,RICHMOND,VA 23298
[4] CYTEL CORP,SAN DIEGO,CA 92121