 Good morning, everyone. I'm Ewan Kerr, sitting in for Angela Davis, and this is NPR News. This morning, I'm talking about what happens to people when they blow the whistle on wrongdoing in medical research. My guest is Carl Elliott. He's a philosophy professor at the University of Minnesota, and he's just out with his latest book. It's called The Occasional Human Sacrifice, Medical Experimentation and the Price of Saying No.