Academic Medical Centers Attitude of Health Personnel Cardiovascular Agents--therapeutic use Female Health Care Surveys Health Knowledge, Attitudes, Practice Humans Hypoglycemic Agents--therapeutic use Hypolipidemic Agents--therapeutic use Male Middle Aged Practice Patterns, Physicians' Private Practice Public Sector Risk Assessment Risk Factors Risk Reduction Behavior Smoking--adverse effects Smoking Cessation--methods Surgeons Tobacco Use Disorder--diagnosis Vascular Surgical Procedures Workload