1. Regional Reference Laboratory for enviromental and clinica surveillance and control of Legionellosis Azienda Ospedaliero Universitaria Policlinici "G. Rodolico ‐ San Marco" Catania Italy
2. Dipartimento di Scienze del Farmaco University of Catania Catania Italy
3. STMicroelectronics Catania Italy
4. Department of Fundamental Microbiology University of Lausanne Lausanne Switzerland
5. Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche, ed Ambientali University of Messina Messina Italy