%0 Journal Article %T Prognostic function to estimate the probability of meaningful clinical improvement after surgery - Results of a prospective multicenter observational cohort study on patients with lumbar spinal stenosis %A Florian Brunner %A Fran£żois Porchet %A Giuseppe Pichierri %A Jakob M. Burgstaller %A Johann Steurer %A Maria M. Wertli %A Mazda Farshad %A Sebastian Winklhofer %A Ulrike Held %J Archive of "PLoS ONE". %D 2018 %R 10.1371/journal.pone.0207126 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6224088/