Members of the exclusive 21st Century Cardiothoracic Surgical Society will be travelling to Havana, Cuba to participate in the first joint academic exchange between the United States and Cuba. )–Next month, twelve members of the exclusive 21st Century Cardiothoracic Surgical Society , a United States-based not-for profit organization of cardiac and thoracic surgeons from around the world, will be travelling to Havana, Cuba to participate in an academic exchange with the Sociedad de Cardiologia y Cirugia Cardiovascular de Cuba .