Mi, B., L. Chen, D. Tong, A. C. Panayi, F. Ji, J. Guo, Z. Hou, Y. Zhang, Y. Xiong, and G. Liu. “Delayed Surgery Versus Nonoperative Treatment for Hip Fractures in Post-COVID-19 Arena: A Retrospective Study of 145 Patients”. Acta Orthopaedica, vol. 91, no. 6, Sept. 2020, pp. 639-43, doi:10.1080/17453674.2020.1816617.