Swierstra Bart A, Vervest Anton M J S, Walenkamp Geert H I M, Schreurs B Wim, Spierings Pieter T J, Heyligers Ide C, van Susante Job L C, Ettema Harmen B, Jansen Mariette J, Hennis Pim J, de Vries Janneke, Muller-Ploeger Sabrina B, Pols Margreet A
The Dutch Orthopaedic Association, The Netherlands.
Acta Orthop. 2011 Oct;82(5):567-76. doi: 10.3109/17453674.2011.623575.