Intelligent individuals who welcome responsibility and challenge. Empathetic people who relate well to children, to parents, and to the range of diseases and disorders common in a large hospital setting like this one. In other words, people who practice not only the science but also the art of medicine.
Many programs offer excellent training in the science of medicine.
The science of medicine is working on children. But the art is working with them. You can't learn that working in a residency program. You're raised to be that, it's your personality. A program is not going to change your personality.