1. Occupational and Environmental Health Department, Dalian Medical University, 9 Lvshun South Road, Dalian 116044, China
2. Nutrition and Food Hygiene, Dalian Medical University, 9 Lvshun South Road, Dalian 116044, China
3. Global Health Research Center, Dalian Medical University, 9 Lvshun South Road, Dalian 116044, China