Authors: James F Cheeseman; Eva C Winnebeck; Craig D Millar; Lisa S Kirkland; James Sleigh; Mark Goodwin; Matt D M Pawley; Guy Bloch; Konstantin Lehmann; Randolf Menzel; Guy R Warman Journal: Proc Natl Acad Sci U S A Date: 2012-04-16 Impact factor: 11.205