title: Changing needles when drawing up vaccines and medications.
authors.forename: R S
authors.initials: RS
authors.lastname: Asnes
mesh_terms: D002648:Child; D004168:Diphtheria Toxoid / Q000008:administration & dosage*; D006801:Humans; D009339:Needles; D010567:Pertussis Vaccine / Q000008:administration & dosage*; D013745:Tetanus Toxoid / Q000008:administration & dosage*
chemical_list: D004168:Diphtheria Toxoid; D010567:Pertussis Vaccine; D013745:Tetanus Toxoid