Listen "Laboratory studies demonstrate causation when it comes to cancer, Elizabeth Tracey reports"
Episode Synopsis
                            Studies looking at lung cancer in people who smoked showed that those who did experienced a lot more lung cancer than those who didn’t. That’s a correlation study, says Otis Brawley, a cancer epidemiology expert at Johns Hopkins. Then came …  Laboratory studies demonstrate causation when it comes to cancer, Elizabeth Tracey reports  »                        
                    
ZARZA We are Zarza, the prestigious firm behind major projects in information technology.