What does it mean to be "opposed" to the use of unregulated e-cigarettes? It means that the European Respiratory Society is opposed to the use of e-cigarettes in any setting in which they are unregulated, such as the current situation throughout most of the world, including in the United States.

It is clear, then, that this study violated the principles of informed consent, as subjects did not provide informed consent prior to being enrolled in the research.

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