1. Department of Occupational and Environmental Health, Hangzhou Normal University School of Public Health, Hangzhou, China.
2. Department of Nutrition and Toxicology, Hangzhou Normal University School of Public Health, Hangzhou, China.
3. Department of Respiratory Medicine, Daping Hospital, Army Medical University (Third Military Medical University), Chongqing, China.
4. Department of Ophthalmology and Vision Science, University of California, Davis, California, USA.
5. Department of Dermatology, University of California, Davis, California, USA.