Complex sentence: Per Fugelli (7 December 1943--13 September 2017) was a Norwegian physician and professor of medicine at the University of Bergen from 1984 to 1992, and at the University of Oslo from 1992 until his death in 2017.
Split into simpler sentences: Per Fugelli (7 December 1943--13 September 2017) was a Norwegian physician and professor of medicine. He was professor at the University of Bergen from 1984 to 1992, and at the University of Oslo from 1992 until his death in 2017.