... of Greater Buenos Aires, Argentina, after the political transitions of 2001-2002: Results of a surveyDiana Rossi1*, Dhan Zunino Singh1, Mar a P a Pawlowicz1, Graciela Touzé1, Melissa ... of substances they used and their routes of administration. These included the age of first use, and data on frequency of u se “ever” and for last 3 months,for: cannabis, intranasal cocaine, non-prescription ... recruited.Sample and Data Collection The sample consisted of young adults 21-35 years of age (in Argentina, the legal age of adulthood began at 21 at the time the st udy was developed). T wo categories...