As a matter of fact, this is surprising, because they started a study in the U.K. that faded out, a similar study. Surprisingly, about the only thing the Americans have done that we can gain from, that we've used as an example for Veterans Affairs, is that they'll consider frostbite as a related ailment, because of the weather.
But the major study I think is the one the Australians did. It's certainly comprehensive and well done. Needless to say, the university was named after one of the famous Australian generals.