1. Beijing Key Laboratory of Paediatric Respiratory Diseases, Beijing Paediatric Research Institute, Beijing, National Clinical Research Centre for Respiratory Diseases, National Key Discipline of Paediatrics, Capital Medical University, Key Laboratory
of Major Diseases in Children, Ministry of Education, Beijing Children's Hospital, Capital Medical University, National Centre for Children's Health, Beijing
2. National Clinical Research Centre for Respiratory Diseases, National Key Discipline of Paediatrics, Capital Medical University, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing Children's Hospital, Capital Medical University,
National Centre for Children's Health, Beijing, Department of Interventional Pulmonology, Beijing Children's Hospital, Beijing
3. National Clinical Research Centre for Respiratory Diseases, National Key Discipline of Paediatrics, Capital Medical University, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing Children's Hospital, Capital Medical University,
National Centre for Children's Health, Beijing, Department of Infectious Diseases, Beijing Children's Hospital, Beijing
4. National Clinical Research Centre for Respiratory Diseases, National Key Discipline of Paediatrics, Capital Medical University, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing Children's Hospital, Capital Medical University,
National Centre for Children's Health, Beijing, Department of Respiratory Diseases, Beijing Children's Hospital, Beijing, China