1. Department of Histology and Cell Biology, Yokohama City University School of Medicine, Yokohama 236-0004, Japan
2. Bioinformatics Laboratory, Advanced Medical Research Center, Yokohama City University School of Medicine, Yokohama 236-0004, Japan
3. Biotechnology Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Tatzberg 47-51, 01307 Dresden, Germany
4. Genome Center, Center for Molecular and Cellular Bioengineering, Technische Universität Dresden, Tatzberg 47-51, 01307 Dresden, Germany
5. Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8562, Japan
6. Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland
7. Swiss Institute of Bioinformatics, 4056 Basel, Switzerland
8. Faculty of Sciences, University of Basel, 4058 Basel, Switzerland