Dr. Peterson is doing alot of collaboration with researchers in Australia. Perhaps if you wrote to him with details about your son, he might be able to steer you to someone in Australia that he is working with. You could also try the other CFS specialists in the U.S. such as Klimas, Bateman, Erlander, Montoya, Lapp, Cheney, and Kogelnik to ask for advice. You never know until you ask and a letter has a better chance of reaching one of these doctors than just making a cold call by phone.