Gjertsen, J.-E., Boutera, A., Dyvik, E. and Hallan, G. 2019. 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, 1 (Oct. 2019), 63–68. DOI:https://doi.org/10.1080/17453674.2019.1683945.