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Witvrouw E, Victor J, Bellemans J, Rock B, Van Lummel R, Van Der Slikke R, Verdonk R.Witvrouw E, et al. Among authors: bellemans j.Knee Surg Sports Traumatol Arthrosc. 2002 Nov;10(6):347-51. doi: 10.1007/s00167-002-0302-2. Epub 2002 Jun 22.Knee Surg Sports Traumatol Arthrosc. 2002.PMID: 12444512