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Response to letter regarding Tobacco smoking

We thank Dr. HJ Aubin et al.[1] for their insightful comments to our study on the association between heart diseases and death by suicide [2]. Dr Aubin and colleagues suggested that smoking might moderate the studied association. This is a highly interesting question, as smoking might increase the likelihood of developing heart diseases. Furthermore, an increasing amount of evidence supports an association between smoking and suicide, although causation is yet to be proven [3].