[1] Hosp Sick Children, Physiol & Expt Med, Toronto, ON M5T 3H7, Canada
[2] Ctr Phenogen, Toronto, ON M5T 3H7, Canada
[3] RIKEN BioResource Ctr, Ibaraki 3050074, Japan
[4] MRC Harwell, Mary Lyon Ctr, Didcot OX11 0RD, Oxon, England
[5] Wellcome Trust Sanger Inst, Cambridge CB10 1SA, England
[6] Baylor Coll Med, Dept Mol & Human Genet, Houston, TX 77096 USA
[7] Jackson Lab, Bar Harbor, ME 04609 USA
[8] Univ Calif Davis, Mouse Biol Program, Davis, CA 95618 USA