Stomatology Department, Ninth Hospital of Xi'an Shaanxi Province, Xi'an City, Shaanxi Province, 710054;
Stomatology Department, Ninth Hospital of Xi'an Shaanxi Province, Xi'an City, Shaanxi Province, 710054;
Pathology Department, Ninth Hospital of Xi'an Shaanxi Province, Xi'an City, Shaanxi Province, 710054;