Antonio Cristaudo is  Head of the STI/HIV Department at the San Gallicano Dermatological Institute, a historic health and research institute in Rome, Italy. He has vast expertise  in the management of patients with or at-risk for STIs. He began his clinical and research activity at the San Gallicano Dermatologic Institute in 1987.  He has been the principal investigator on various trials and scientific projects on STIs and HIV and HPV infections. He is the author of more than 180 scientific articles in indexed journals, most of them in the field of STIs and of dermatological diseases. He is past-President of the Italian Association of Hospital Dermatologists (ADOI).       Massimo Giuliani is a behavioral scientist and an epidemiologist with expertise in the epidemiology, prevention, and control of STIs and HIV infection. From 1990 to 2009 he was scientific coordinator of the Italian Sentinel Surveillancefor STIs at the Italian Institute of Health , Rome, Italy. Since 1995 he  is clinical psychologist and researcher at the STI Unit of the San Gallicano Dermatological Institute in Rome, Italy where he is still involved in clinical practice with STI and HIV patients, and coordinating or acting as principal investigator for behavioral prevention programs, trials, and scientific projects on STIs,  HIVand HPV infections. Dr. Giuliani is the author of over 200 scientific articles in the field of STIs and HIV infection. He is a reviewer for various leading biomedical journals and is also a member of the Scientific Committee of the Italian Multidisciplinary Society for STIs (SIMAST).