Bill Johnson, Dunmore, PA Diana, I did not think my questions were unfair. I am making an attempt to be open minded in this. There is a great deal of asymptomatic disease out there, who knows better than us? Can a for-profit screening be in the public interest? I am not sure. Dinah makes a strong argument in favor of screening studies. I am merely asking questions raised in reading that argument. I do not believe those questions were either negative or biased.