Bachelor of Science, Odense University, Denmark, 1974. Cand.Sci., Odense University, Denmark, 1977. Doctor of Medicine, Odense University, Denmark, 1985.
Associate professor, Royal veterinary and Agricultural U., Copenhagen, 1983-1991; dean veterinary faculty, Royal veterinary and Agricultural U., Copenhagen, 1989-1991; professor, Royal Veterinary College, London, 1991-1996; professor, head department comparative medicine, U. Uppsala, Sweden, since 1996.
Member Scandinavian Society Laboratory Animal Science (president since 1996), AALAS, LASA, Scandinavian LAS, GV-SOLAS, European Federation Laboratory Animal Science Associations (president 2001, past president since 2001).
Married Bente Rosdahl Kristiansen. Children: Lisa, David, Sofie, Amanda.