1. Beavis Informatics Ltd., Winnipeg, MB, Canada R3B 1G7, Manitoba Centre for Systems Biology and Proteomics, University of Manitoba, Winnipeg, MB, Canada R3T 2N2, Rockefeller University, 1230 York Avenue, New York, New York 10027, and Biomedical Research Centre, University of British Columbia, Vancouver, BC, Canada V6T 1Z3