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(A) 1 to 4 year overall survival rate in 25 patients showing grade 1–3 tumor regression (group 1) and in 34 patients with grade 4–5 tumor regression (group 2). (B) The 1 to 4 year overall survival rate in patients undergoing radical surgery; 24 patients showing grade 1–3 tumor regression (group 1) and in 22 patients with grade 4–5 tumor regression (group 2).
