1. National Clinical Research Center of Cardiovascular Diseases, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital; National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing People's Republic of China
2. Center for Outcomes Research and Evaluation, Yale-New Haven Hospital; New Haven Connecticut
3. Department of Obstetrics, Gynecology, and Reproductive Sciences; Yale School of Medicine; New Haven Connecticut
4. Division of Cardiology; University of Colorado Anschutz Medical Campus; Aurora Colorado
5. Saint Luke's Mid America Heart Institute/University of Missouri-Kansas City; Kansas City Missouri
6. Section of Cardiovascular Medicine, Robert Wood Johnson Clinical Scholars Program, Department of Internal Medicine; Yale University School of Medicine; New Haven Connecticut
7. Department of Health Policy and Management; Yale School of Public Health; New Haven Connecticut