The UCSC Genome Browser Database: 2008 update.

D Karolchik, R M Kuhn, R Baertsch, G P Barber, H Clawson, M Diekhans, B Giardine, R A Harte, A S Hinrichs, F Hsu, K M Kober, W Miller, Jakob Skou Pedersen, A Pohl, B J Raney, B Rhead, K R Rosenbloom, K E Smith, M Stanke, A ThakkapallayilH Trumbower, T Wang, A S Zweig, D Haussler, W J Kent