1. Department of Microbiology, University Hospitals of Derby and Burton NHS Foundation Trust, Derby, Derbyshire, UK
2. Department of Infection and Tropical Medicine, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, South Yorkshire, UK
3. School of Medicine and Population Health, University of Sheffield, Sheffield, South Yorkshire, UK
4. Laboratory of Biostatistics, School of Medicine, University of Crete, Heraklion, Greece