Authors: D Andrew Howell; Mark Sullivan; Peter E Nugent; Richard S Ellis; Alexander J Conley; Damien Le Borgne; Raymond G Carlberg; Julien Guy; David Balam; Stephane Basa; Dominique Fouchez; Isobel M Hook; Eric Y Hsiao; James D Neill; Reynald Pain; Kathryn M Perrett; Christopher J Pritchet Journal: Nature Date: 2006-09-21 Impact factor: 49.962