By Rantala Kati   in Drugs: Education, Prevention & Policy

ISSN:1465-3370|11|5|367-379

Informa Healthcare‎(2004)‎

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By Rantala Kati   Hellström Eeva   in International Journal of Social Research Methodology

ISSN:1464-5300|4|2|87-100

Routledge Ltd‎(2001)‎

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