Sixty years ago, a family with a sick child could call their doctor, and, in a couple of hours, see him or her at the front curb, emerging with the well-known “black bag.” Times have changed, but at l

Sixty years ago, a family with a sick child could call their doctor, and, in a couple of hours, see him or her at the front curb, emerging with the well-known “black bag.” Times have changed, but at l