Northwestern University

University of Chicago

J. Craig Venter Institute

University College London

University of Toronto

University of Virginia

UT Southwester Medical Center at Dallas

Washington University School of Medicine

This project has been funded in whole or in part with Federal funds from the National Institute of Allergy and Infectious Diseases, National Institutes of Health, Department of Health and Human Services, under Contract No. HHSN272200700058C.