Recommendations for collection and integration of community-based testing and linkage to care data into national surveillance, monitoring and evaluation systems for HIV, viral hepatitis and sexually transmitted infections : results from the INTEGRATE Joint Action - Fernández López, Laura (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Klavs, Irena (National Institute of Public Health) ; Conway, Anna (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Kustec, Tanja (National Institute of Public Health) ; Serdt, Mojca (National Institute of Public Health) ; Baros, Sladjana (Institute of Public Health of Serbia "Dr Milan Jovanovic Batut") ; Staneková, Danica Valkovičová (Slovak Medical University) ; Lemsalu, Liis (National Institute for Health Development) ; Wawer, Iwona (National AIDS Centre, The Agency of the Ministry of Health) ; Wysocki, Piotr (National AIDS Centre, The Agency of the Ministry of Health) ; Casabona-Barbarà, Jordi (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Universitat Autònoma de Barcelona