Staging was accomplished depending on the tumour node metastasis process [eighteen]. For statistical goal, instances had been lumped into two groups: early phase—together with stages I and II and Superior stage—including stages III and IV. AG-ch? l?c: S?nh này là s?nh dành cho nh?ng ??i lý hay h?i viên gi?i thi?u b?n ch?i ???c ?u tiên t?