1. Mouse Genomics Resource Laboratory, National Institute of Genetics, Shizuoka
2. Transdisciplinary Research Integration Center, Research Organization of Information and Systems, Tokyo
3. Department of Genetics, The Graduate University for Advanced Studies (SOKENDAI), Kanagawa
4. BioResource Center, RIKEN, Ibaraki
5. Mammalian Genetics Laboratory National Institute of Genetics Shizuoka Japan