Hoogen, H.J. van den

patient treatment trial lumbosacral radicular syndrome page number study citation purposes outcome health number design disorder measurement measure management musculoskeletal practitioner netherland lumbosacral analysis syndrome lrs trial guideline radicular randomisation scale result therapy group research assistant purpose baseline citation information figure 6 weeks vet hc exercise research sciatica outcome measure outcome measures advice status movement baseline measurement muscle strength treatment preference referral treatment groups pt treatment criteria vlaeyen jw koke aj advice / information article dutch college spine gps management oostendorp ra therapist protocol center randomised effect vlaeyen effectiveness reliability validity euroqol intervention ostelo consensus practice assistant rotterdam disability verhagen strength vroomen