Influenza-associated Hospitalizations by Industry, 2009–10 Influenza Season, United States oleh Sara E. Luckhaupt, Marie Haring Sweeney, Renee Funk, Geoffrey M. Calvert, Mackenzie Nowell, Tiffany D’Mello, Arthur Reingold, James Meek, Kimberly Yousey-Hindes, Kathryn E. Arnold, Patricia Ryan, Ruth Lynfield, Craig Morin, Joan Baumbach, Shelley Zansky, Nancy M. Bennett, Ann Thomas, William Schaffner, Timothy Jones