TY - GEN AU - Guerras Moreira, Juan Miguel AU - García de Olalla, Patricia AU - Belza Egozcue, Maria Jose AU - Fuente, Luis de la AU - Palma, David AU - Del Romero, Jorge AU - García-Pérez, Jorge-Néstor AU - Hoyos, Juan AU - Methysos Project Group AU - García de Olalla, Patricia AU - Palma, David AU - Del Romero, Jorge AU - García-Pérez, Jorge-Néstor AU - Methysos Project Group PY - 2021 DO - 10.1186/s12954-021-00531-2 UR - http://hdl.handle.net/20.500.12105/14154 AB - Background: We estimate the prevalence of drug injection, the variables associated with having ever injected and the proportion of ever injectors whose first drug injection was for having sex; we describe the first drug injection episode, analyze the... LA - eng PB - BioMed Central (BMC) KW - Chemsex KW - Drug injection KW - Slamming KW - MSM TI - Sexualized drug injection among men who have sex with men in Madrid and Barcelona as the first episode of drug injecting TY - research article ER -