Key Nigel S NS Harold R. Roberts Distinguished Professor, Division of Hematology/Oncology, Department of Medicine, 932 Mary Ellen Jones Bldg, CB #7035, Chapel Hill, NC 27599, USA. - - 2010 Venous thromboembolism, comprising deep vein thrombosis and pulmonary embolism, is a common disorder with at least 250 000 new events occurring each year in the United States alone.