1. David Geffen School of Medicine, University of California, Los Angeles
2. Division of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles
3. Department of Biomathematics, David Geffen School of Medicine, University of California, Los Angeles
4. Division of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles4Department of Environmental Health Sciences, School of Public Health, University of California, Los Angeles