原发性胃恶性淋巴瘤(primary gastric malignant lymphoma,PGML)占胃恶性肿瘤的2%～5%,其病史及临床表现与胃癌、胃溃疡相似,胃镜下......

In order to meet the strict requirements for information in engineering management,the positive interval (0,1]in Shannon......