1. The First Affiliated Hospital of Fujian Medical University; Department of Hematology and Rheumatology; #20 Chazhong Road Fuzhou Fujian Province China 350005
2. University of Ottawa; Centre for Global Health, Institute of Population Health; 1 Stewart street Ottawa Ontario Canada K1N 6N5
3. The First Hospital of Hebei Medical University; Donggang Road Shijiazhuang Hebei Province China 050031