1. Department of Preventive Medicine, College of Medicine, The University of Tennessee Health Science Center, Memphis
2. Department of Epidemiology, College of Public Health, University of Iowa, Iowa City
3. Department of Nutrition and Food Hygiene, School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, China
4. Department of Environmental Health, School of Public Health, Jining Medical University, Jining, China
5. Department of Occupational and Environmental Health, College of Public Health, University of Iowa, Iowa City
6. Obesity Research and Education Initiative, University of Iowa, Iowa City
7. Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City
8. Now with Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China