1. Department of Clinical Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
2. Department of Ultrasound, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
3. Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
4. Department of Anatomy, School of Basic Medicine, Guangdong Pharmaceutical University, Guangzhou, China
5. Department of Anatomy, Guangdong Jiangmen Chinese Traditional Medicine College, Jiangmen, China