Each day of those early years in pediatric surgery I felt I was on the cutting edge. Some of the surgical problems that landed on the operating table at Children's had not even been named. Many of the operations I performed had never been done before. It was an exuberant feeling, but also a little scary. At times I was troubled by fears that I wasn't doing things the right way, that I would have regrets, or that someone else had performed a certain procedure successfully but had never bothered to write it up for the medical journals, or if they had I couldn't find it.

Koop: The Memoirs of America's Family Doctor (1993), p. 127.