1. Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, North Carolina, USA
2. Department of Microbiology and Immunology, University of Iowa, Iowa City, Iowa, USA
3. Marsico Lung Institute, University of North Carolina, Chapel Hill, North Carolina, USA
4. Center for Integrative Microbial Evolution and Department of Pharmacology and Pharmaceutical Biosciences, University of Oslo, Oslo, Norway
5. Department of Biosciences, Section for Genetics and Evolutionary Biology and Centre for Ecological and Evolutionary Synthesis, University of Oslo, Oslo, Norway