Cocaine use among heroin users in Spain: the diffusion of crack and cocaine smoking

摘要

Conclusions-In Spain smoking cocaine may be progressively diffusing from the south west to the north east, similar to what has happened with smoking heroin, but beginning later in time. The factors associated with smoking cocaine are basi- cally ecological or cultural in nature (characteristics of the available drugs and the min route of heroin administration in each city). Study objective-To describe the preva- Lence and patterns of use of crack and Cocaine hydrochloride among heroin Users in Spain.