Fredrik Röding, Department of Surgical and Perioperative Sciences, defends his doctoral thesis Injuries are not accidents! An emergency-department population-based epidemiological study of injuries with special reference to trauma recidivism, hip fractures and geriatric falls. Faculty opponent Professor Sari Ponzer, Department of Clinical Science and Education,KI SÖS, Karolinska Institutet, Stockholm. Principal supervisor Ulrica Bergström.
