1. Department of Computer Science, University of Illinois at Urbana-Champaign, Urbana, Illinois.
2. Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois.
3. Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois.
4. Regional College of Medicine, University of Illinois, Urbana, Illinois.
5. Department of Adult Medicine, Carle Foundation Hospital, Champaign, Illinois.
6. Department of Medical Information Science, University of Illinois at Urbana-Champaign, Urbana, Illinois.