1. Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St Mary's Hospital, College of MedicineThe Catholic University of Korea Seoul South Korea
2. Center of Respiratory MedicineBach Mai Hospital Hanoi Vietnam
3. Department of Pulmonology and Respiratory Medicine, Faculty of MedicineUniversitas Indonesia‐Persahabatan National Respiratory Center Hospital Jakarta Indonesia
4. Department of Respiratory Medicine and Infectious Disease, Graduate School of MedicineYamaguchi University Ube Japan
5. Department of Chest MedicineTaipei Veterans General Hospital Taipei Taiwan