title: Prospective randomized controlled trials: when the gold in the gold standard isn't pure.
authors.forename: R L
authors.initials: RL
authors.lastname: Koretz
mesh_terms: D005770:Gastrointestinal Neoplasms / Q000401:mortality / Q000601:surgery; D006801:Humans; D010289:Parenteral Nutrition, Total; D011300:Preoperative Care; D011446:Prospective Studies; D016032:Randomized Controlled Trials as Topic / Q000592:standards*