However, a 2006 study conducted by the University of Melbourne, Melbourne Sexual Health Centre and Victoria's Alfred Hospital, concluded that "The number of unlicensed brothels in Melbourne is much smaller than is generally believed." The study's results presented an estimate of between 13 and 70 unlicensed brothels in Melbourne, and the method used by the researchers involved a systematically analysis of the language used in advertisements from Melbourne newspapers published in July 2006 to identify sex industry venues that were indicated a likelihood of being unlicensed. A total of 438 advertisements, representing 174 separate establishments, were analysed.