1 Department of Allergy, Allergy Institute, Beijing Shijitan Hospital, Capital Medical University, Beijing, China.
2 Department of Allergy, First Hospital of Hohhot, Inner Mongolia, China.
3 Department of Otolaryngology, Yong Loo Lin School of Medicine, National University of Singapore.
4 Department of Otolaryngology Head and Neck Surgery, Department of Allergy, Beijing TongRen Hospital, Capital Medical University, Beijing, China.
5 Beijing Laboratory of Allergic Diseases, Beijing Municipal Education Commission and Beijing Key Laboratory of New Medicine and Diagnostic Technology Research for Nasal Disease, Beijing Institute of Otolaryngology, Beijing, China.
6 Department of Epidemiology and Statistics, Institute of Basic Medical Sciences Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China.
7 State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China.