Evolution of virulence in epidemic community-associated methicillin-resistant Staphylococcus aureus. - Li,M.; Diep,B.A.; Villaruz,A.E.; Braughton,K.R.; Jiang,X.; DeLeo,F.R.; Chambers,H.F.; Lu,Y.; Otto,M. (Proc Natl Acad Sci USA, 2009)