Effect of varying the number of entrée selections in the hospital menu.
D003201:Computers; D004469:Economics, Hospital; D005069:Evaluation Studies as Topic; D005371:Filing; D005518:Food Preferences; D005521:Food Service, Hospital; D006739:Hospital Administration; D006801:Humans; D008433:Mathematics; D008722:Methods; D008962:Models, Theoretical; D009874:Operations Research; D011682:Purchasing, Hospital