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Measures Questionnaire A self-administered questionnaire was used to assess the general sociodemographic characteristics of participants (age, sex, grade, boarding situation and academic performance), factors associated with e-cigarette use (ever use or currently use), environmental exposure (defined as adolescents who have seen anyone using e-cigarettes over the past 30 days), perceptions (including two domains, positive and negative expectancy domains)
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Invoice printers: Provide clear details of purchases, including weight and price
That's exactly what I've been doing, come to think of it