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A benefit-risk profile should be individualized for the patients history and specific procedure

Participants who had used e-cigarettes in the past but were not current users were classified according to their current smoking status (as never users, former smokers, or current cigarette smokers), because this classification prioritised current rather than historical exposure

Older studies tend to assume that people are either lying about their usage because of prohibition or were smoking both cannabis and tobacco, making the differences impossible to study

These results suggest (1) any delay in sampling blood from mice after SHS exposure should be minimized as much as possible and the delay time should be about the same among different samples for the data precision