Gjertsen, Jan-Erik, Andrea Boutera, Eva Dyvik, and Geir Hallan. “Is There a Weekend Effect After Hip Fracture Surgery? A Study of 74,410 Hip Fractures Reported to the Norwegian Hip Fracture Register”. Acta Orthopaedica 91, no. 1 (October 30, 2019): 63–68. Accessed August 17, 2024. https://actaorthop.org/actao/article/view/387.