It is getting more widespread. One of the issues with ketamine, as you know, is that it has to be injected intravenously, which is not an easily accessible modality of administration in other settings, but right now a clinical trial is ongoing for an intranasal administration of ketamine. That's being tested as we speak, but it is still an experimental venture right now. It is not a mainstay therapeutic intervention.
On February 13th, 2017. See this statement in context.