About the Authors
Department of Biochemistry, Albert Einstein College of Medicine, Bronx, New York, United States of America
Banting and Best Department of Medical Research, University of Toronto, Toronto, Ontario, Canada
The authors have declared that no competing interests exist.
Conceived and designed the experiments: IW CB RM. Performed the experiments: IW GC AT RB RM. Analyzed the data: IW GC AT RB RM. Contributed reagents/materials/analysis tools: TH. Wrote the paper: IW.