1Department of Nutrition, Harvard School of Public Health, Boston, Massachusetts, USA
2Department of Epidemiology, Division of Preventive Medicine, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA.
3Department of Preparedness, Swedish Institute for Communicable Disease Control, and MTC, Karolinska Institute, Sweden.
4Channing Laboratory, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
5Departments of Nutrition and Epidemiology, Harvard School of Public Health, Boston, Massachusetts, USA