Authors: Ola Blixt; Steve Head; Tony Mondala; Christopher Scanlan; Margaret E Huflejt; Richard Alvarez; Marian C Bryan; Fabio Fazio; Daniel Calarese; James Stevens; Nahid Razi; David J Stevens; John J Skehel; Irma van Die; Dennis R Burton; Ian A Wilson; Richard Cummings; Nicolai Bovin; Chi-Huey Wong; James C Paulson Journal: Proc Natl Acad Sci U S A Date: 2004-11-24 Impact factor: 11.205