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  • Sánchez-Niubò, Albert; Aalen, Odd O; Domingo-Salvany, Antònia; Amundsen, Ellen J; Fortiana, Josep; Røysland, Kjetil (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    Background Existing incidence estimates of heroin use are usually based on one information source. This study aims to incorporate more sources to estimate heroin use incidence trends in Spain between 1971 ...