Affiliation: | 1. Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, , Wuhan, China;2. University of North Carolina at Greensboro, , Greensboro, NC, USA;3. Center for Health Disparities (Biostatistics Unit) and Department of Public Health, Brody School of Medicine, Eastern Carolina University, , Greenville, NC, USA |