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Attention doctorportal newsletter subscribers,

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As of January 2019, we will no longer be sending out the doctorportal email newsletter. The final issue of this newsletter will be distributed on 13 December 2018. Articles from this issue will be available to view online until 31 December 2018.

[Correspondence] Risk thresholds for alcohol consumption

We read the paper by Angela M Wood and colleagues1 (April 14, p 1513) on risk thresholds for alcohol consumption with great interest. However, we were surprised by their decision to eliminate non-drinkers from their analysis. We do not consider their justification for doing so scientifically valid; they eliminated non-drinkers because of notable differences in baseline characteristics compared with current drinkers.

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