Reliability and validity of the short questionnaire to assess health-enhancing physical activity (SQUASH) in patients after total hip arthroplasty

by Wendel-Vos GC Wanda, Kootstra Johan WJ, Bulstra Sjoerd K, Zijlstra Wiebren, Groothoff Johan W, Akker-Scheek Inge, Wagenmakers Robert, van Raaij Jos JAM, Stevens Martin
Published 2008-10-01