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