Department of Gastroenterology;
the Second Affiliated Hospital;
Sun Yat-Sen University;
Guangzhou 510120;
Guangdong Province;
China;
Department of Pediatrics;
the Second Affiliated Hospital;
Sun Yat-Sen University;
Guangzhou 510120;
Guangdong Province;
China;
Department of Pathology;
the Second Affiliated Hospital;
Sun Yat-Sen University;
Guangzhou 510120;
Guangdong Province;
China;