1. Key Laboratory of Environmental Medicine Engineering, Ministry of Education, Department of Nutrition and Food Hygiene, School of Public Health, Southeast University, Nanjing, P.R. China;
2. Department of Laboratory, Zhongda Hospital Affiliated to Southeast University, Nanjing, P.R. China;
3. Department of Preventive Care, Zhongda Hospital Affiliated to Southeast University, Nanjing, P.R. China;
4. National Institute for Nutrition and Health, Chinese Centre for Disease Control and Prevention, Beijing, P.R. China