Informatics Research department, Celera Genomics, Rockville, MD 20850, USA. Ross.Lippert@celera.com|Informatics Research department, Celera Genomics, Rockville, MD 20850, USA. Ross.Lippert@celera.com|Informatics Research department, Celera Genomics, Rockville, MD 20850, USA. Ross.Lippert@celera.com|Informatics Research department, Celera Genomics, Rockville, MD 20850, USA. Ross.Lippert@celera.com