Institution: | 1. Department of Microbiology, Boston University School of Medicine, Boston, Massachusetts, United States of America.; 2. United States Army Medical Research Institute of Infectious Diseases, Virology Division, Fort Detrick, Maryland, United States of America.; 3. Whitehead Institute for Biomedical Research, Cambridge, Massachusetts, United States of America.; 4. The Broad Institute, Cambridge Massachusetts, United States of America.; University of Alberta, Canada, |