Why nutritional support?
D006801:Humans; D008962:Models, Theoretical; D009747:Nutritional Physiological Phenomena; D010288:Parenteral Nutrition; D010289:Parenteral Nutrition, Total; D011300:Preoperative Care; D012306:Risk; D013514:Surgical Procedures, Operative; D013530:Surgical Wound Infection / Q000517:prevention & control*