Complex sentence: After setting up her own hospital in a village called Abumombazi in 1972, she transferred to Danish Red Cross Hospital in Kinshasa in 1975 before returning to Denmark in 1977 following symptoms of an unknown disease, which was later discovered to be AIDS.
Split into simpler sentences: After setting up her own hospital in a village called Abumombazi in 1972, she transferred to Danish Red Cross Hospital in Kinshasa in 1975. She returned to Denmark in 1977 after developing symptoms of an unknown disease, which was later discovered to be AIDS.