1. Division of Allergy, Immunology and Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan; Section of Allergy, Immunology and Rheumatology, Buddhist Tzu Chi General Hospital, Hualien, Taiwan
2. Section of Allergy, Immunology and Rheumatology, Buddhist Tzu Chi General Hospital, Hualien, Taiwan
3. Department of Pathology, Taipei Veterans General Hospital, Taipei, Taiwan
4. Division of Allergy, Immunology and Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan
5. Division of Allergy, Immunology and Rheumatology, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Medicine, National Yang-Ming University, Taipei, Taiwan