1. Division of Nephrology and Hypertension; Mayo Clinic; Rochester MN USA
2. Department of Internal Medicine; University of Minnesota; Minneapolis MN USA
3. SUNY Upstate Medical University; Syracuse NY USA
4. Division of Infectious Disease; University of Texas Medical School at Houston; Houston TX USA
5. Division of Infectious Disease; Chulalongkorn University; Bangkok Thailand
6. Department of Medicine; Faculty of Medicine; Ramathibodi Hospital; Mahidol University; Bangkok Thailand