Coudane, H., Fery, A., Sommelet, J., Lacoste, J., Leduc, P., & Gaucher, A. (1981). Aseptic Loosening of Cemented Total Arthroplasties of the Hip in Relation to Positioning of the Prosthesis: New Utilization of the Tschuprow-Cramer Statistical Test. Acta Orthopaedica, 52(2), 201–205. https://doi.org/10.3109/17453678108991782