In this edition of The Motley Fool's health-care show Market Checkup, health-care analysts David Williamson and Max Macaluso take a close look at one of the largest pharmaceutical companies in the world: Bristol-Myers Squibb. This drugmaker posted results in line with analyst estimates last quarter, but what was behind it's massive year-over-year decline in revenue? What are the reasons to buy and sell this stock today? What should investors be watching in upcoming quarters? Watch today's show to find out what our analysts think.