1. Graduate School, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
2. Department of Surgery, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
3. The Transplantation Center, The First Central Hospital of Mongolia, Ulaanbaatar, Mongolia
4. Department of Internal Medicine, Health Development Center, Ulaanbaatar, Mongolia
5. School of Medicine, University of Utah, Salt Lake City, UT, USA
6. Department of Nephrology, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia