1. Program in Cell Biology and Structural Biology Program, Hospital for Sick Children, Toronto, Ontario, Canada M5G1X8
2. Department of Chemistry and Biology, Ryerson University, Toronto, Ontario, Canada M5B 2K3
3. Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO 63110
4. Program in Molecular and Cellular Pharmacology, Department of Pharmacology, University of Wisconsin Medical School, Madison, WI 53706
5. Department of Cell Biology, Department of Neurobiology, Howard Hughes Medical Institute, and Program in Cellular Neuroscience, Neurodegeneration, and Repair, Kavli Institute of Neuroscience, Yale University School of Medicine, New Haven, CT 06510
6. Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA 94305