Cardiovascular Associates is a group of several physicians who specialize in cardiology and related fields. The group offers a range of health care services to people throughout Iowa, Nebraska and South Dakota. It offers nuclear imaging, electrocardiograms, carotid duplex studies, pacemaker monitoring, stress echocardiography and family education services. The group also provides angiography and peripheral vascular testing services. Cardiovascular Associates, with a location in Sioux City, Iowa, operates a Web site that features various medical tests and nutrition tips. The group s Web site also provides links to the America Heart Association, the American Medical Association and the America College of Cardiology.