Tol, M C J M, Willigenburg, N W, Willems, H C, Gosens, T, Rasker, A, Heetveld, M J, Schotanus, M G M, VAN DONGEN, J M, Eggen, B, Kormos, M, VAN DER PAS, S L, VAN DER VAART, A W & Poolman, R W 2022, ' Posterolateral or direct lateral approach for cemented hemiarthroplasty after femoral neck fracture (APOLLO) : protocol for a multicenter randomized controlled trial with economic evaluation and natural experiment alongside ', Acta Orthopaedica, vol. 93, pp. 732-738 . https://doi.org/10.2340/17453674.2022.4547 APOLLO research group 2022, ' Posterolateral or direct lateral approach for cemented hemiarthroplasty after femoral neck fracture (APOLLO) : protocol for a multicenter randomized controlled trial with economic evaluation and natural experiment alongside ', Acta Orthopaedica, vol. 93, pp. 732-738 . https://doi.org/10.2340/17453674.2022.4547 Acta Orthopaedica, 93, 732-738. Routledge/Taylor & Francis Group Acta Orthopaedica, 93, 732-738. Informa Healthcare Acta orthopaedica, 93 Acta orthopaedica, 93, 732-738. Informa Healthcare