Staging was done based on the tumour node metastasis method [18]. For statistical function, instances were being lumped into two teams: early phase—like phases I and II and Highly developed stage—which include phases III and IV. V?i chuyên gia: Ngô Anh Khoa – H?n 10 n?m trong tham gia vào l?nh v?c cá c??c, chuyên ?ánh giá các nhà c�