Norwegian by birth, Dr. Louise Aall studied medicine first in Germany and then Switzerland. She then chose to work as an itinerant bush doctor, setting up a clinic in Mahenge in Tanganyika (now Tanzania). There she was the first western physician to identify and treat a variant of epilepsy, now recognized by the World Health Organization as "Nodding Syndrome." While working at her clinic in 1959, Dr. Aall was asked by the Red Cross to fly...