Department of Gastroenterology;
Chenggong Hospital;
Xiamen University;
Xiamen 361003;
Fujian Province;
China;
Department of Gastroenterology;
The 174th Hospital of the Chinese PLA;
Wenyuan Road;
Xiamen 361003;
Fujian Province;
China;
Department of Gastroenterology;
Nanfang Hospital;
Southern Medical University;
Guangzhou 510515;
Guangdong Province;
China;