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Lange, J.; Fischer, C. S.; Kühn, J.-P. .; Völzke, H. .; Ittermann, T.; Gümbel, D. .; Kasch, R. .; Haralambiev, L.; Laqua, R.; Hinz, P. . The neck–shaft Angle: An Update on Reference Values and Associated Factors. ActaO 2019, 91, 53-57.