1. Department of Paediatrics; Prince of Wales Hospital; Chinese University of Hong Kong; Shatin Hong Kong
2. Department of Allergy and Clinical Immunology; State Key Laboratory of Respiratory Disease; The First Affiliated Hospital of Guangzhou Medical University; Guangzhou China
3. Xinhua Hospital affiliated with Shanghai Jiao Tong University School of Medicine; Shanghai China
4. Department of Pediatrics; Center of Allergy and Clinical Immunology Research; College of Medicine; National Cheng Kung University; Tainan Taiwan
5. Department of Pediatrics; Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine; Shanghai China
6. Department of Pediatrics; Shengzhou People's Hospital; Shengzhou Zhejiang China
7. Department of Respiratory Medicine; Children's Hospital of Chongqing Medical University; Chongqing China
8. Department of Allergy; Beijing Children's Hospital; Capital Medical University; Beijing China
9. Children's Hospital of Capital Institute of Pediatrics; Beijing China