Ornstein, E., Franzén, H., Johnsson, R., & Sundberg, M. (2000). Radiostereometric analysis in hip revision surgery-optimal time for index examination: 6 patients revised with impacted allografts and cement followed weekly for 6 weeks. Acta Orthopaedica, 71(4), 360–364. https://doi.org/10.1080/000164700317393349