Today's insulin is safer and more effective than it once was - STAT
Inject Insulin With Steady Shot For Diabetes Pen Needles
The human cost of insulin in America - BBC News
Amazon.com: Medt - Fine Insulin Pen Needles (32G 4mm) - Diabetic Needles for Insulin Injections, Ultra Fine Compatible with Most Diabetes Pens - 100 Ct, Pack of 2 : Health & Household