1. IFOM, The FIRC Institute for Molecular Oncology Foundation, Milan, Italy
2. Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Minamiosawa, Hachioji-shi, Tokyo, Japan
3. Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka, Japan
4. Laboratory of Genome Structure and Function, Research Center for Epigenetic Disease, Institute of Molecular and Cellular Biosciences, University of Tokyo, Yayoi Bunkyo-Ku, Tokyo, Japan
5. Chromosome Dynamics Group, Molecular Oncology Program, Spanish National Cancer Research Centre, Madrid, Spain