From the blockbuster, eleven-time "New York Times" bestselling author comes a novel of medical suspense that begins with these chilling questions: Who ends up with the blood samples you routinely give for tests? What else are they being used for? Why don't you know? Take a Deep Breath. . . .In Boston, a disgraced medical student is sent to deliver a research paper that could save her career. . . . Four thousand miles away, in a jungle hospital in...