Key points are not available for this paper at this time.
Data from Japan from 1969 to 1982 indicated that, as domestic gas was detoxified, its use for suicide declined. In addition, there was no evidence that would-be suicides switched to alternative methods for suicide. The results were interpreted as support for a recent suggestion that preventing access to lethal methods for suicide may prevent suicide.
Lester et al. (Tue,) studied this question.