ALB and anemia (phenotype): Through literature review, we collected nutritional index of patients (All data were taken from preoperative data of patients), including: total protein (TP), hemoglobin (HGB), prognostic nutritional index (PNI): 5 × lymphocyte count (109/L) + serum albumin (g/L), blood glucose before breakfast (BGBB), platelet count (PLT), lymphocyte count (LC), anemia (male < 120 g/L; female < 110 g/L), hypoproteinemia (albumin < 35 g/L or total protein < 60 g/L).