RT Journal Article SR Electronic(1) A1 Folch, C A1 Muñoz, R A1 Zaragoza, K A1 Casabona, J YR 2009 T1 Sexual risk behaviour and its determinants among men who have sex with men in Catalonia, Spain JF Eurosurveillance VO 14 IS 47 SP 19415 OP DO https://doi.org/10.2807/ese.14.47.19415-en UL https://www.eurosurveillance.org/content/10.2807/ese.14.47.19415-en