Comparison of the effectiveness of two topical anesthetics and a placebo in reducing injection pain.
D000287:Administration, Topical; D000779:Anesthetics, Local / Q000008:administration & dosage*; D001566:Benzocaine / Q000008:administration & dosage; D006801:Humans; D007267:Injections / Q000009:adverse effects; D010146:Pain / Q000517:prevention & control*; D010919:Placebos
D000779:Anesthetics, Local; D010919:Placebos; D001566:Benzocaine