Department of Ultrasound, Third Affiliated Hospital of Sun Yat?Sen University, Guangzhou, Guangdong 510630, China;
Department of Ultrasound, Third Affiliated Hospital of Sun Yat?Sen University, Guangzhou, Guangdong 510630, China;
Department of General Surgery, Linnan Hospital, Third Affiliated Hospital of Sun Yat?Sen University, Guangzhou, Guangdong 510530, China;
Department of Endocrinology and Metabolism, Endocrinology Unit, Third Affiliated Hospital of Sun Yat?Sen University, Guangzhou, Guangdong 510630, China;
Department of Ultrasound, Third Affiliated Hospital of Sun Yat?Sen University, Guangzhou, Guangdong 510630, China;
Department of Ultrasound, Third Affiliated Hospital of Sun Yat?Sen University, Guangzhou, Guangdong 510630, China;
Department of General Surgery, Linnan Hospital, Third Affiliated Hospital of Sun Yat?Sen University, Guangzhou, Guangdong 510530, China;
Department of General Surgery, Linnan Hospital, Third Affiliated Hospital of Sun Yat?Sen University, Guangzhou, Guangdong 510530, China;
Department of Ultrasound, Third Affiliated Hospital of Sun Yat?Sen University, Guangzhou, Guangdong 510630, China;