Gjertsen, Jan-Erik, Stein Atle Lie, Jonas M Fevang, Leif Ivar Havelin, Lars B Engesæter, Tarjei Vinje, and Ove Furnes. 2007. “Total Hip Replacement After Femoral Neck Fractures in Elderly Patients : Results of 8,577 Fractures Reported to the Norwegian Arthroplasty Register”. Acta Orthopaedica 78 (4):491-97. https://doi.org/10.1080/17453670710014130.