Affiliation: | 1. Department of Medical Microbiology , St George’s Hospital Medical School, Cranmer Terrace , London , SW17 ORE , UK;2. Ceihtlar Microbiology Research Group, Division of Surgical Sciences, Eastman Dental Institute, University College London, 256 Gray’s Inn Road , London , WCIX 8LD , UK;3. Italfarmaco Research Centre, Via Lavoratori, 54 , Cinisello Balsamo , 20092 , Milan , Italy |