Staging was accomplished determined by the tumour node metastasis program [18]. For statistical purpose, conditions were being lumped into two teams: early phase—such as levels I and II and Highly developed phase—such as levels III and IV. V?i chuyên gia: Ngô Anh Khoa – H?n ten n?m trong tham gia vào l?nh v?c cá c??c, chuyên ?ánh giá