Yes, some of it is in that work. The centre in the U.K. has done a large tri-nation study on Canada, the U.K., and the U.S., showing the prevalence of operational stress injuries. What they've found is that the rates of PTSD are very high in the U.S., ranging somewhere between 20% and 40%. In Canada, PTSD tends to be at about 20%, but what's more prevalent in Canada seems to be depression, and in the U.K. what seems to be more prevalent as a mental health issue is binge drinking.
So there is very good evidence out there. Right now the numbers show about one in five, which is no different for the Canadian military, which is no different for the general population. The problem, as you know, with mental health injuries is that they don't often show up right away. And Veterans Affairs will tell us that they will get an influx five, ten, and fifteen years after an operation.