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One study found that youth who vaped a higher concentration of nicotine were more likely to subsequently smoke at higher frequency and intensity levels, which further supports the catalyst hypothesis and suggests specificity of the association to nicotine and nicotine-containing products

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Peer review Peer review information Communications Medicine thanks Samuel Asare, Alicea Lieberman and the other, anonymous, reviewer(s) for their contribution to the peer review of this work

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Among Hispanics in the U.S, lack of trust in the health care system can be a barrier to accessing care