1. Nutrilite Health Institute, Shanghai, China
2. Shandong University, Department of Nutrition and Food Hygiene, School of Public Health, Cheeloo College of Medicine, Jinan, China
3. Shandong University, Experimental center for public health and Preventive Medicine, School of Public Health, Cheeloo College of Medicine, Jinan, Shandong, China
4. Shandong University, Department of Epidemiology, School of Public Health, Cheeloo College of Medicine, Jinan, China