European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom, National Centre for Microbiology, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain.|National Centre for Microbiology, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain.|European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom.|National Centre for Microbiology, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain.|European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom.