With the exception of aluminum, the concentrations of most metals were substantially lower during vaping than in the no vaping condition. Metals therefore do not appear to be a significant health issue at this point in time.

Because of the importance of this issue, I have written to the editorial staff of JAMA, urging them to publish a corrective statement, requiring Dr. Fiore to disclose his long and intensive history of conflicts of interest with pharmaceutical companies that manufacture smoking cessation drugs.

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