"Immunization economics United States Legislation." . . "Legislation, Drug United States." . . "Pneumococcal Infections prevention & control United States Legislation." . . . . . . . . . . . . . "A review of selected Federal vaccine and immunization policies based on case studies of pneumococcal vaccine"@en . . . "A review of selected Federal vaccine and immunization policies : based on case studies of pneumococcal vaccine" . . . . . . . . . . . . . . . . . . . "Immunization standards United States Legislation." . . "Vaccines United States Legislation." . . "Cost-Benefit Analysis United States Legislation." . .