1. Departamento de Microbiología, Facultad de Biología, Universidad de Sevilla, 41012 Seville, Spain
2. MRC Centre for Molecular Bacteriology and Infection, Department of Life Sciences, Imperial College London, London, UK
3. Department of Environmental Protection, Estación Experimental del Zaidín (CSIC), Granada, Spain
4. Singapore Centre for Environmental Life Sciences Engineering. Nanyang Technological University, Singapore