Greve, Katarina, et al. “Waiting More Than 24 Hours for Hip Fracture Surgery Is Associated With Increased Risk of Adverse Outcomes for Sicker Patients: A Nationwide Cohort Study of 63,998 Patients Using the Swedish Hip Fracture Register”. Acta Orthopaedica, vol. 94, Feb. 2023, pp. 87-96, doi:10.2340/17453674.2023.9595.