1、The Study on Micrometastases in Conventional Pathologic Non-metastatic No8A、No11P Lymph Nodes in the Lower Third of Gastric Cancer;
3、Micrometastases in Conventional Pathologic Non-metastsis No.12 Lymph Nodes in the Patients with Carcinoma in the Lower Third of Stomach;
2、Analysis of Rebuilding of Alveolar Bone after Closing the Space of Absence of Lower First Molar with Movement of Distal Lower Second Molar and Suspension and Erection of Horizontal Impaction Lower Third Molar