1. Division of Medical Microbiology and Genitourinary Medicine, University of Liverpool, Daulby Street, Liverpool L69 3GA, United Kingdom
2. Department of Tropical Medicine, Federal University of Pernambuco, Recife, Brazil
3. Laboratory of Microbial Interactions, Department of Molecular and Cellular Interactions, Flanders Interuniversity Institute of Biotechnology, Vrije Universiteit Brussel, Brussels, Belgium