Dear Ann Landers,
am an emergency-room pediatrician and the father of four. I cannot emphasize strongly enough the importance of wearing a bicycle helmet. I frequently treat children in the emergency room who have escaped a major head injury because they were wearing a helmet. And, sadly, too often, I see children who have suffered serious, irreversible and tragic head injuries -- simply because they did NOT wear a helmet. Parents need to insist on helmets and make sure their children wear them every time they hop on a bicycle. My family and I certainly do.

Dear Dr. Kennedy,
I appreciate your input. And now, here's another letter on the subject.