Rapid, "painless" local anesthesia.
D000766:Anesthesia, Dental / Q000295:instrumentation; D000772:Anesthesia, Local / Q000295:instrumentation; D001856:Bone Marrow Examination / Q000295:instrumentation; D002648:Child; D002675:Child, Preschool; D006801:Humans; D008722:Methods; D013129:Spinal Puncture / Q000295:instrumentation