title: On pens and needles--delivering insulin safety.
mesh_terms: D016503:Drug Delivery Systems / Q000295:instrumentation*; D006801:Humans; D007328:Insulin / Q000008:administration & dosage* / Q000627:therapeutic use; D009339:Needles; D061214:Patient Safety; D017751:Safety Management / Q000379:methods*
chemical_list: D007328:Insulin