Author information:
(1)European Molecular Biology Laboratory (EMBL), Genome Biology Unit, 
Meyerhofstrasse 1, Heidelberg 69117, Germany. Electronic address: 
aleksandra.pekowska@embl.de.
(2)European Molecular Biology Laboratory (EMBL), Genome Biology Unit, 
Meyerhofstrasse 1, Heidelberg 69117, Germany.
(3)European Molecular Biology Laboratory (EMBL), Cell Biology and Biophysics 
Unit, Meyerhofstrasse 1, Heidelberg 69117, Germany.
(4)Genomics & Immunity, National Institute of Arthritis and Musculoskeletal and 
Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
(5)Genomics & Immunity, National Institute of Arthritis and Musculoskeletal and 
Skin Diseases, National Institutes of Health, Bethesda, MD 20892, USA; Center 
for Cancer Research, NCI, National Institutes of Health, Bethesda, MD 20892, 
USA.
(6)European Molecular Biology Laboratory (EMBL), Genome Biology Unit, 
Meyerhofstrasse 1, Heidelberg 69117, Germany; Stanford Genome Technology Center, 
855 California Ave, Palo Alto, CA 94305, USA; Department of Genetics, Stanford 
University School of Medicine, Stanford, CA 94305, USA.
(7)European Molecular Biology Laboratory (EMBL), Genome Biology Unit, 
Meyerhofstrasse 1, Heidelberg 69117, Germany; European Molecular Biology 
Laboratory (EMBL), European Bioinformatics Institute, Wellcome Trust Genome 
Campus, Cambridge CB10 1SD, UK; Wellcome Trust - Medical Research Council Stem 
Cell Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QR, 
UK. Electronic address: bertone@stemcells.cam.ac.uk.
(8)European Molecular Biology Laboratory (EMBL), Genome Biology Unit, 
Meyerhofstrasse 1, Heidelberg 69117, Germany. Electronic address: 
whuber@embl.de.