Bioinformatics Research Unit, Advanced Center for Computing and Communication, RIKEN, Wako, Saitama 351-0198, Japan.|Department of Computational Biology and Medical Sciences, Faculty of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan.|Quantitative Biology Center (QBiC), RIKEN, Suita, Osaka 565-0874, Japan.|Department of Systems Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan.|Department of Systems Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan.|Department of Systems Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan.|Bioinformatics Research Unit, Advanced Center for Computing and Communication, RIKEN, Wako, Saitama 351-0198, Japan.|Bioinformatics Research Unit, Advanced Center for Computing and Communication, RIKEN, Wako, Saitama 351-0198, Japan.