Goosen, J. H. M., Castelein, R. M., Runne, W. C., Dartee, D. A., & Verheyen, C. C. P. M. (2006). Long-term results of a soft interface- (Proplast-) coated femoral stem. Acta Orthopaedica, 77(4), 585–590. https://doi.org/10.1080/17453670610012647