[1] Xuzhou City Hosp Tradit Chinese Med, Dept Ultrasound, Xuzhou 221000, Jiangsu, Peoples R China
[2] Xuzhou Canc Hosp, Dept Ultrasound, Xuzhou 221000, Jiangsu, Peoples R China
[3] Xuzhou Med Univ, Dept Ultrasound, Affiliated Hosp, Xuzhou 221000, Jiangsu, Peoples R China
[4] Xuzhou City Hosp Tradit Chinese Med, Dept Pathol, Xuzhou 221000, Jiangsu, Peoples R China