1Division of Cardiovascular Sciences, The University of Manchester, Manchester, M13 9PT UK
2Nuclear Dynamics Programme, The Babraham Institute, Cambridge, CB22 3AT UK
3Josep Carreras Leukaemia Research Institute, Campus ICO-Germans Trias I Pujol, Badalona, 08916 Barcelona, Spain
4MRC Biostatistics Unit, University of Cambridge, Cambridge, CB2 0SR UK
5Department of Medicine, University of Cambridge, Cambridge, CB2 0QQ UK
6Division of Cell Biology, Medical Research Council Laboratory of Molecular Biology, Cambridge, CB2 0QH UK
7Epigenetics Programme, The Babraham Institute, Cambridge, CB22 3AT UK
8Department of Biological Science, Florida State University, Tallahassee, 32306 FL USA
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