fɹʌm tˈuː θˈaʊzənd tˈɛn tə tˈuː θˈaʊzənd twˈɛlv, lˈændʒ wʌzɐ ɹˈɛɡjʊlɚ pɑːɹtˈɪsɪpənt ɪnðɪ ˈænjuːəl bˈæŋkɑːk ˌɪntɚnˈæʃənəl sɪmpˈoʊsiəm ˌɔn ˌeɪtʃˌaɪvˈiː mˈɛdəsən, wˌɛɹ hiː ˈɑːɹɡjuːd ðæt pɹˈɛp ɪz səbstˈænʃəli mˈoːɹ ɪfˈɛktɪv ðɐn kˈɜːɹənt mˈɛθədz fɔːɹ ˌeɪtʃˌaɪvˈiː pɹɪvˈɛnʃən.
From 2010 to 2012, Lange was a regular participant in the annual Bangkok International Symposium on HIV Medicine, where he argued that PREP is substantially more effective than current methods for HIV prevention.