1. Department of Microbiology, New York University School of Medicine, New York, NY, USA
2. European Bioinformatics Institute (EMBL-EBI), Hinxton, UK
3. Department of Parasites and Microbes, Wellcome Sanger Institute, Hinxton, UK
4. Department of Biostatistics, University of Oslo, Oslo, Norway
5. Helsinki Institute of Information Technology (HIIT), Department of Mathematics and Statistics, University of Helsinki, Helsinki, Finland