The individuals better qualified to answer those questions would be, obviously, in the medical community. What I can tell you, on the basis on the information provided to us by Health Canada, is that they basically estimate that a significant portion of procedures can be replaced by other substances such as thallium and fluoride, as we heard from Dr. McEwan.
That said, there is a portion, estimated to be in a range of 50%, where there is not necessarily at this time an alternative available to technetium. So that is why it is important to continue to have a minimum supply and a healthy supply of technetium. That is why it's important to continue the international efforts to bring it, in the absence of the NRU.