DepartmentofUltrasound,ThirdAffiliatedHospital,SunYat-SenUniversity,Guangzhou510630,GuangdongProvince,China;
DepartmentofUltrasound,FirstAffiliatedHospital,SunYat-SenUniversity,Guangzhou510089,GuangdongProvince,China;
DepartmentofInfectiousDiseases,ThirdAffiliatedHospital,SunYat-SenUniversity,Guangzhou510630,GuangdongProvince,China;