Samuel A. Shelburne, III, David Keith, Nicola Horstmann, Paul Sumby, Michael T. Davenport, Edward A. Graviss, Richard G. Brennan, James M. Musser
Proc Natl Acad Sci U S A. 2008 Feb 5; 105(5): 1698–1703. Published online 2008 Jan 29. doi: 10.1073/pnas.0711767105