1. Wenfei Li:
Department of Radiology, First Hospital of Qinhuangdao, Hebei, China
2. Fang Han:
Department of Radiology, Affiliated Zhongshan Hospital of Dalian University,Dalian, Liaoning; Department of Radiology, First Hospital of Qinhuangdao,Hebei, China
3. Dandan Song:
Department of Internal Medicine, Beijing Northern Hospital of China North Industries Group, China
Corporation, Beijing,
4. Tahir Mehmood Shakir:
Department of Radiology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China