In the present study, investigators intend to establish a large database of cardiovascular patients. More specifically, investigators will create a database of approximately 12,000 cardiac catheterization and heart failure patients from Emory University Hospital, the Emory Clinic, Emory University Hospital Midtown, Grady Memorial Hospital, Atlanta VA Medical Center, Organized/Planned Community Events in the Atlanta Metropolitan area, held at places of Worship, local Community Centers, shopping Malls, doctor's Offices and Health Clinics and any other miscellaneous locations, e.g. Parks, Leisure centers, Conference centers. Once the data has been collected, investigators will run a variety of statistical analyses to which will help us to learn more about the factors that cause various cardiovascular diseases such as coronary heart disease, angina, heart failure, hypertension, and stroke. The statistical analyses will also help us to understand how these diseases can be treated more effectively. By collecting a large amount of data on a large number of cardiovascular patients, investigators will be able to analyze, with a great deal of precision, those factors that influence the onset, course, and treatment of cardiovascular disease. The results of these precise analyses can then be used to help optimize clinical efforts to prevent and treat cardiovascular disease.