1. Research Center for High-Altitude Medicine; Qinghai University Medical School; Xining Qinghai People's Republic of China
2. Department of Human Genetics and the Divisions of Endocrinology, Metabolism, and Diabetes and Division of Hematology; University of Utah School of Medicine; Salt Lake City UT USA
3. Section of Hematology and Oncology, Department of Medicine; University of Illinois at Chicago; Chicago IL USA