1. Division of Allergy, Asthma and Clinical Immunology, Department of Internal Medicine; Chonnam National University Medical School; Gwangju Korea
2. Department of Internal Medicine; Yonsei University College of Medicine; Seoul Korea
3. Department of Internal Medicine; Chung-Ang University College of Medicine; Seoul Korea
4. Drug Safety Monitoring Center; Seoul National University Hospital; Seoul Korea
5. Department of Internal Medicine; Ajou University School of Medicine; Suwon Korea
6. Department of Internal Medicine; Dankook University College of Medicine; Cheonan Korea
7. Department of Internal Medicine; Kyungpook National University School of Medicine; Daegu Korea
8. Department of Internal Medicine; Chungbuk National University Hospital; Cheongju Korea
9. Department of Internal Medicine; Seoul National University Bundang Hospital; Seongnam Korea
10. Department of Internal Medicine; Pusan National University Hospital; Busan Korea
11. Department of Internal Medicine; SMG-SNU Boramae Medical Center; Seoul Korea
12. Department of Internal Medicine; Korea University College of Medicine; Seoul Korea
13. Department of Internal Medicine; Dongguk University Ilsan Hospital; Goyang Korea
14. Department of Internal Medicine; Hallym University Dongtan Sacred Heart Hospital; Hwaseong Korea
15. Department of Internal Medicine; Chosun University Hospital; Gwangju Korea