1. Department of Occupational Health and Environment Health (School of Public Health), Anhui Medical University, Hefei, Anhui, China;
2. Department of Nutrition, Chaohu Hospital of Anhui Medical University, Hefei, Anhui, China;
3. Institute of Dermatology, Anhui Medical University, Hefei, Anhui, China;
4. Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK