1. Institute for Social Medicine, Epidemiology and Health Economics; Charité-Universitätsmedizin Berlin; Berlin Germany
2. Institute of Nutritional Medicine; University of Hohenheim; Hohenheim Germany
3. Institute of Public Health; Charité-Universitätsmedizin Berlin; Berlin Germany
4. Saw Swee Hock School of Public Health; National University; 21 Lower Kent Ridge Road Singapore
5. Yong Loo Lin School of Medicine; National University; 21 Lower Kent Ridge Road Singapore