Department of Ultrasound, Third Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, China;
Department of Ultrasound, Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China;
Department of Ultrasound, Third Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, China;
Department of Ultrasound, Third Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150081, China;