About the Authors
Department of Genetics, Harvard Medical School, Boston, Massachusetts, United States of America
Banting and Best Department of Medical Research, University of Toronto, Toronto, Canada
Département de Biochimie, and Centre Robert-Cedergren, Bio-Informatique Génomique, Université de Montréal, Montréal, Canada
The authors have declared that no competing interests exist.
VC, GC, NNB, CRL, SWM, TRH, and FW conceived and designed the experiments. VC, GC, NNB, and CRL performed the experiments. VC and FW wrote the paper with contributions from GC, NNB, CRL, SWM, and TRH.