1. Department of Medical Epidemiology and Biostatistics; Karolinska Institutet; Stockholm Sweden
2. Department of Epidemiology, Harvard T.H. Chan School of Public Health; Boston MA
3. Channing Division of Network Medicine, Department of Medicine; Brigham and Women's Hospital and Harvard Medical School; Boston MA
4. Centre for Public Health Science, University of Iceland; Reykjavik Iceland
5. Department of Nutrition, Harvard T.H. Chan School of Public Health; Boston MA