Mapping HIV-related behavioural surveillance among injecting drug users in Europe, 2008 Hope, V and Jeannin, A and Spencer, B and Gervasoni, J P and van de Laar , M J and Dubois-Arber, F and the ECDC HIV and STI Behavioural Surveillance Mapping Group, collective, Eurosurveillance, 16, 19960 (2011), https://doi.org/10.2807/ese.16.36.19960-en