1. Department of Biomedical Science, College of Medicine, Chosun University , Gwangju , Republic of Korea
2. Premedical Science, College of Medicine, Chosun University , Gwangju , Republic of Korea
3. Department of Internal Medicine, College of Medicine, Chosun University , Gwangju , Republic of Korea
4. Department of Internal Medicine, Chonnam National University Medical School , Gwangju , Republic of Korea
5. Division of Infectious Diseases, Keimyung University Dongsan Hospital, Keimyung University School of Medicine , Daegu , Republic of Korea
6. Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine , Seongnam , Republic of Korea
7. Department of Internal Medicine, Yeungnam University Medical Center , Daegu , Republic of Korea
8. Department of Internal Medicine, Wonju College of Medicine, Yonsei University , Wonju , Republic of Korea
9. Department of Internal Medicine, College of Medicine, Chungbuk National University , Cheongju , Republic of Korea
10. Department of Infectious Diseases, School of Medicine, Ajou University , Suwon , Republic of Korea
11. Department of Internal Medicine, College of Medicine, Dong-A University , Busan , Republic of Korea
12. Department of Internal Medicine, Chuncheon Sacred Heart Hospital, College of Medicine, Hallym University , Chuncheon , Republic of Korea
13. Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, Catholic University of Korea , Seoul , Republic of Korea
14. Department of Internal Medicine, Inje University Ilsan Paik Hospital , Goyang , Republic of Korea
15. Department of Internal Medicine, College of Medicine, Pusan National University , Yangsan , Republic of Korea
16. National Institute of Cholera and Enteric Diseases, Indian Council of Medical Research , Kolkata , India