1. Division of Infectious Diseases and Global Public Health Department of Medicine University of California San Diego La Jolla California
2. Division of Cardiology Department of Medicine University of Iowa Iowa City Iowa
3. Division of Cardiothoracic Surgery Department of Surgery University of California San Diego La Jolla California
4. Division of Cardiology Department of Medicine University of California San Diego La Jolla California
5. Population Health Sciences University of Bristol Bristol UK