The Cancer Calculus, the latest investigation from the International Consortium of Investigative Journalists, brought together 47 media partners in 37 countries, from Finland to Brazil, India, Malta, Mexico and beyond. The reporting shed new light on the strategies pharmaceutical giant Merck & Co., known as MSD outside the U.S. and Canada, has used to widen the use of its blockbuster cancer drug, Keytruda, and protect its monopoly.