Staging was accomplished based upon the tumour node metastasis program [18]. For statistical purpose, circumstances ended up lumped into two teams: early stage—like levels I and II and State-of-the-art stage—which includes stages III and IV. B?n s? ?n t??ng v?i d?ch v? ch?m sóc khách hàng t?i K8, v?i ??i ng? nhân viên ?ông ??o, chuyên n