TY - JOUR AU - Bartholdy, C; Juhl, C; Christensen, R TI - The role of muscle strengthening in exercise therapy for knee osteoarthritis: a systematic review and meta-regression analysis of randomized trials JO - Semin Arthritis Rheum VL - 47 PY - 2017 DO - 10.1016/j.semarthrit.2017.03.007 L3 - PubMed-ID: 28438380 SP - 9 EP - 21 ER -