Dyreborg, Karen, et al. “Migration of the Uncemented Echo Bi-Metric and Bi-Metric THA Stems: A Randomized Controlled RSA Study Involving 62 Patients With 24-Month Follow-up”. Acta Orthopaedica, vol. 91, no. 6, Aug. 2020, pp. 693–698 , doi:10.1080/17453674.2020.1802682.