1 Division of Genetics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA. mlbulyk@genetics.med.harvard.edu.
2 Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA. mlbulyk@genetics.med.harvard.edu.
3 Laboratoire de génétique moléculaire, Institut de recherches cliniques de Montréal (IRCM), Montreal, Quebec, Canada. jacques.drouin@ircm.qc.ca.
4 Département de Biochimie, Université de Montréal, Montreal, Quebec, Canada. jacques.drouin@ircm.qc.ca.
5 Department of Biochemistry, McGill University, Montreal, Quebec, Canada. jacques.drouin@ircm.qc.ca.
6 Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, WI, USA. mharrison3@wisc.edu.
7 Department of Biochemistry, University of Cambridge, Cambridge, UK. ajt208@cam.ac.uk.
8 Applied Tumour Genomics Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland. ajt208@cam.ac.uk.
9 Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden. ajt208@cam.ac.uk.
10 Institute for Regenerative Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. zaret@pennmedicine.upenn.edu.
11 Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. zaret@pennmedicine.upenn.edu.