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Implementing a complex intervention in an existing ecosystem of health interventions is notoriously difficult because they often need significant and stable funding, staffing, resourcing and training, and have to be placed in existing structures with their own priorities and agendas [63]

Large quantities or duplicate items could be considered commercial and may require declaration

peer pressure, academic adjustment related factors, psychological, social factors, environmental factors and socio-economic factors

Even so, a sufficient body of evidence justifies actions taken now to prevent and reduce the use of e-cigarettes and exposure to secondhand aerosol from e-cigarettes, particularly among youth and young adults

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