1. Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
2. Arts and Sciences, Brandeis University, Waltham, Massachusetts, USA
3. Centers of Excellence for Influenza Research and Surveillance (CEIRS), Memphis, Tennessee, USA
4. Department of Microbiology, Immunology and Biochemistry, College of Medicine, The University of Tennessee Health Science Center, Memphis, Tennessee, USA