Roche has announced the acquisition of Flatiron Health in a deal worth $1.9 billion.    Flatiron is a healthcare technology and services company focused on accelerating cancer research and improving patient care. They develop oncology-specific electronic health record (EHR) systems, most notably an information exchange platform which allows researchers to access and learn from patient records. The company’s message is that large amounts of data could be used to speed up and, in some case...