1. Department of Microbiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
2. Department of Molecular and Biomedical Science, School of Biological Sciences, University of Adelaide, Adelaide, South Australia, Australia
3. Departamento de Ciencias de la Vida, Universidad de las Fuerzas Armada ESPE, Sangolquí, Ecuador
4. Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
5. Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA