1. Department of Epidemiology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
2. Department of Epidemiology, Public Health College, Harbin Medical University, Harbin, Heilongjiang 150081, China
3. The The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
4. Eccles Institute of Human Genetics, University of Utah, Salt Lake City, UT 84112, USA
5. Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT 84132, USA