1. School of Biosciences, University of Sheffield, Sheffield, United Kingdom
2. The Florey Institute for Host-Pathogen Interactions, University of Sheffield, Sheffield, United Kingdom
3. Biosciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
4. Department of Physics and Astronomy, University of Sheffield, Sheffield, United Kingdom
5. Centre for Bacterial Cell Biology, Bioscience Institute, Newcastle University, Newcastle upon Tyne, United Kingdom