All the witnesses have told us they did not know if there were other studies into possible causes. The studies conclude, if not certainly, then very probably, that the cause of the health problems is not depleted uranium.
In your opinion, is it important to know what the cause of Gulf War syndrome is? In fact, health problems appeared not only after that war, but in later conflicts too. Many veterans come home with health problems, but the causes are not known. I find it a bit worrying that no one is looking into the cause of these health problems.