1. Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA;
2. Department of Preventive Medicine, Soonchunhyang University School of Medicine, Asan, Choongnam, Korea
3. Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
4. Department of Epidemiology and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
5. Department of Cardiovascular Epidemiology and Population Genetics, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
6. Institute of Environmental and Occupational Medicine, Soonchunhyang University School of Medicine, Asan, Choongnam, Korea