1. Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA
2. Faculty of Medicine, University of Jordan, Amman 11942, Jordan
3. Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Samut Prakan 10540, Thailand
4. Department of Internal Medicine, Faculty of Medicine, Thammasat University, Pathum Thani 12120, Thailand
5. Department of Medicine, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI 96813, USA