Drupal-Bibcite0<style face="normal" font="default" size="100%">Distinguishing characteristics between pandemic 2009–2010 influenza A (H1N1) and other viruses in patients hospitalized with respiratory illness</style><style face="normal" font="default" size="100%">Distinguishing characteristics between pandemic 2009–2010 influenza A (H1N1) and other viruses in patients hospitalized with respiratory illness</style>