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Illegal Substance Use among Italian High School Students: Trends over 11 Years (1999–2009)
- Sabrina Molinaro,
- Valeria Siciliano,
- Olivia Curzio,
- Francesca Denoth,
- Stefano Salvadori,
- Fabio Mariani
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- Published: June 10, 2011
- https://doi.org/10.1371/journal.pone.0020482