McCann Worldgroup's subsidiaries have offices in more than 100 countries. If there was an interpretive dance to describe integrated advertising and marketing services, it might be called the McCann-can. A division of media services conglomerate Interpublic Group, McCann Worldgroup is one of the world's largest advertising agency networks, providing creative ad services, media buying, public relations, and brand development work through many main operating units, including McCann Erickson, Universal McCann, FutureBrand, and Momentum Worldwide. It offers relationship marketing services through MRM Worldwide, and it serves clients in the health care industry through McCann Healthcare.