Affymetrix Corporation, Bioinformatics, 6550 Vallejo Street, Suite 100 Emeryville, CA 94608, USA. ron_shigeta@affymetrix.com|Affymetrix Corporation, Bioinformatics, 6550 Vallejo Street, Suite 100 Emeryville, CA 94608, USA. ron_shigeta@affymetrix.com|Affymetrix Corporation, Bioinformatics, 6550 Vallejo Street, Suite 100 Emeryville, CA 94608, USA. ron_shigeta@affymetrix.com|Affymetrix Corporation, Bioinformatics, 6550 Vallejo Street, Suite 100 Emeryville, CA 94608, USA. ron_shigeta@affymetrix.com