ACKNOWLEDGMENTS
This study was supported by Phramongkutklao Hospital and Phramongkutklao College of Medicine foundation Scholarship and Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos. The authors wish to acknowledge Mrs. Jitta Tubkate for help in contacting the patients and Asst.Prof. Nattapon Jaisupa for advice in the laboratory work. We thank Dr. David Groeger for proofreading our manuscript.