1. Department of Pathology and Laboratory Medicine, University of Cincinnati, Cincinnati, Ohio 45237, United States
2. Section of Atherosclerosis and Vascular Medicine, Department of Medicine, Baylor College of Medicine, Houston, Texas 77030, United States
3. Mass Spectrometry Services, Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, United States
4. Department of Pathology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States