1. Department of Paediatrics Faculty of Medicine Chinese University of Hong Kong Hong Kong China
2. Department of Pediatrics Yong Loo Lin School of Medicine National University of Singapore Singapore Singapore
3. Department of Allergy and Clinical Immunology State Key Laboratory of Respiratory Disease The First Affiliated Hospital of Guangzhou Medical University Guangzhou China
4. Department of Pediatrics Siriraj Hospital Mahidol University Bangkok Thailand
5. Department of Pediatrics Graduate School of Medicine Gunma University Gunma Japan
6. Department of Pediatrics Chonnam National University Hospital Chonnam National University Medical School Gwangju Korea
7. Childhood Asthma and Atopy Center Humidifier Disinfectant Health Center Asan Medical Center University of Ulsan College of Medicine Seoul Korea