Our study has several other limitations. First of all, the relatively low number of patients in this single-centre investigation might not have allowed significant results concerning other factors identified so far to influence late presentation, such as male gender, being migrant or being MSM alone. Unlike the notifications to the national case surveillance, we are not able to safely exclude patients who might have been tested earlier for HIV, despite a history of first diagnosis less than 3 months before presentation to our treatment centre.