About the Authors

Colette M Johnston

Affiliation X Chromosome Group, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom

Frances L Lovell

Affiliation X Chromosome Group, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom

Daniel A Leongamornlert

Affiliation X Chromosome Group, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom

Barbara E Stranger

Affiliation Population and Comparative Genomics Group, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom

Emmanouil T Dermitzakis

Affiliation Population and Comparative Genomics Group, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom

Mark T Ross

To whom correspondence should be addressed. E-mail: MRoss@illumina.com

¤ Current address: Illumina Inc., Chesterford Research Park, Little Chesterford, Essex, United Kingdom

Affiliation X Chromosome Group, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

CMJ and MTR conceived and designed the experiments, analyzed the data, and wrote the paper. CMJ, FLL, and DAL performed the experiments. BES and ETD contributed reagents/materials/analysis tools.