wheelchair itself, it's interesting. he has significant stairioids th that he has to take as part of his therapy. my understanding was some of those steroids had weakened the tendons and people develop pain. these are the side effects associated with the therapy even more so than the cancer itself. but, you know, for the patient it's all part of the same thing. i mean you feel perhaps one day and then you feel miserable to the point you need hospitalization. >> you were the first journalist i believe to break the news that senator mccain had brain cancer. you were the only doctor given permission to speak with his doctors at the time of his diagnosis. what can you tell about his prognosis when it comes to his diagnosis? >> don, this is one of those tough things. you make projections and predictions based on that, but as you know, don, because we've talked about this sort of thing