Liu, Yan, Robert A. Childs, Tatyana Matrosovich, Stephen Wharton, Angelina S. Palma, Wengang Chai, Rodney Daniels, Victoria Gregory, Jennifer Uhlendorff, Makoto Kiso, Hans-Dieter Klenk, Alan Hay, Ten Feizi, and Mikhail Matrosovich. "Altered Receptor Specificity and Cell Tropism of D222G Hemagglutinin Mutants Isolated from Fatal Cases of Pandemic A(H1N1) 2009 Influenza Virus." Journal of Virology. 84 (2010): 12069-12074.