Why we've stopped hiring smokers: Dr. Toby Cosgrove

We think that smoking is the number one preventable cause of cancer, says Dr. Toby Cosgrove, Cleveland Clinic president & CEO, explaining why his hospital screens potential employees for nicotine. And Dr. John Noseworthy, Mayo Clinic president & CEO, and Dr. Robert Grossman, NYU Langone Medical Center, weigh in on their hiring policies.