1. Division of Respiratory, Allergy and Clinical Immunology, Vinmec International Hospital, Times City and VinUni Project, Hanoi, Vietnam.
2. Northern Clinical School, Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.
3. Department of Allergy and Clinical Immunology, Hanoi Medical University, Hanoi, Vietnam.
4. Centre of Allergology and Clinical Immunology, Bach Mai Hospital, Hanoi, Vietnam.
5. Department of Clinical Immunology and Allergy, Royal North Shore Hospital, Sydney, Australia.