1. School of Biological Sciences, Faculty of Science, Kadoorie Biological Sciences BuildingThe University of Hong Kong Pokfulam Hong Kong
2. School of Public Health, Li Ka Shing Faculty of MedicineThe University of Hong Kong Pokfulam Hong Kong
3. Graduate School of Public Health and Health PolicyCity University of New York New York United States
4. Institute of Public Health and Clinical NutritionUniversity of Eastern Finland Kuopio Finland