Who was Einar Gustafson? How is this significant?

Einar Gustafson was the real "Jimmy" from Jimmy's Fund. This is significant because Einar is alive and well, living in Maine with three children. Einar had been a truck driver by trade. He is 63 years old. Phyllis Clauson said she felt that the world needed to know that Einar was still alive and that the treatment all those years ago had been successful.