When 93-year-old Doris Aas arrived at the hospital on a recent Tuesday morning, she could not speak and the right side of her body was paralyzed. Today, she is walking around as if nothing ever happened.

When 93-year-old Doris Aas arrived at the hospital on a recent Tuesday morning, she could not speak and the right side of her body was paralyzed. Today, she is walking around as if nothing ever happened.