Every year on the third Monday in March, medical school deans across the nation warn their senior students to stay alert for a pager call. Worse than a late-night code blue, that ring, if it comes, portends terrible news.

Every year on the third Monday in March, medical school deans across the nation warn their senior students to stay alert for a pager call. Worse than a late-night code blue, that ring, if it comes, portends terrible news.