Links between transactional sex and HIV/STI-risk and substance use among a large sample of European men who have sex with men
Berg, Rigmor C ; Weatherburn, Peter ; Marcus, Ulrich ; Schmidt, Axel J
BMC infectious diseases, 2019-08, Vol.19 (1), p.686-9, Article 686 [Periódico revisado por pares]England: BioMed Central Ltd
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