Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK. tf2@sanger.ac.uk|Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK. tf2@sanger.ac.uk|Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK. tf2@sanger.ac.uk|Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK. tf2@sanger.ac.uk|Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK. tf2@sanger.ac.uk|Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK. tf2@sanger.ac.uk|Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK. tf2@sanger.ac.uk