1. Department of Ultrasound; Sun Yat-Sen Memorial Hospital; Sun Yat-Sen University; Guangzhou; Guangdong Province; China
2. Infection Department; Guangzhou No.8 Hospital; Guangzhou; Guangdong Province; China
3. Department of Thyroid and Vascular Disease Surgery; Sun Yat-Sen Memorial Hospital; Sun Yat-Sen University; Guangzhou; Guangdong Province; China
4. Department of General Surgery; The Second Affiliated Hospital; Shanxi Medical University; Taiyuan; Shanxi Province; China
5. Radiology Department; The First Affiliated Hospital; Sun Yat-Sen University; Guangzhou; Guangdong Province; China