[1] UNIV ILLINOIS, MED CTR, DEPT BIOL CHEM, CHICAGO, IL 60612 USA
[2] FRANKLIN MCLEAN MEM RES INST, CHICAGO, IL 60637 USA
[3] UNIV ILLINOIS, MED CTR, CTR RES RESOURCES, CHICAGO, IL 60612 USA
[4] UNIV CHICAGO, PRITZKER SCH MED, DEPT MED, CHICAGO, IL 60637 USA
[5] UNIV CHICAGO, PRITZKER SCH MED, DEPT BIOCHEM, CHICAGO, IL 60637 USA