L. C. M. Klapwijk, N. M. C. Mathijssen, J. C. Van Egmond, B. M. Verbeek, and S. B. W. Vehmeijer, “The first 6 weeks of recovery after primary total hip arthroplasty with fast track”, ActaO, vol. 88, no. 2, pp. 140–144, Mar. 2017.