van Steenbergen, L.N. et al. 2020. Total hip arthroplasties in the Dutch Arthroplasty Register (LROI) and the Nordic Arthroplasty Register Association (NARA): comparison of patient and procedure characteristics in 475,685 cases. Acta Orthopaedica. 92, 1 (Nov. 2020), 15–21. DOI:https://doi.org/10.1080/17453674.2020.1843875.