| Affiliation: | 1. Department of Allergy & Clinical Immunology, State Key Laboratory of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China;2. The school of Medicine, The First Affiliated Hospital of Guangdong, Pharmaceutical University, Guangzhou, China;3. The Department of Medicine, Firestone Institute for Respiratory Health, The Research Institute of St. Joe's Hamilton, St.Joseph's Healthcare, McMaster University, Hamilton, ON, Canada;4. Departments of Paediatrics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China |
