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Ulrich, Nils H; Burgstaller, Jakob M; Valeri, Fabio; Pichierri, Giuseppe; Betz, Michael; Fekete, Tamas F; Wertli, Maria M; Porchet, François; Steurer, Johann; Farshad, Mazda (2022). Incidence of Revision Surgery After Decompression With vs Without Fusion Among Patients With Degenerative Lumbar Spinal Stenosis. JAMA Network Open, 5(7), e2223803. American Medical Association 10.1001/jamanetworkopen.2022.23803
Burgstaller, Jakob M; Wertli, Maria M.; Ulrich, Nils H; Pichierri, Giuseppe; Brunner, Florian; Farshad, Mazda; Porchet, François; Steurer, Johann; Gravestock, Isaac (2020). Evaluating the Minimal Clinically Important Difference of EQ-5D-3L in Patients with Degenerative Lumbar Spinal Stenosis: A Swiss Prospective Multi-Center Cohort Study. Spine, 45(18), pp. 1309-1316. Wolters Kluwer Health 10.1097/BRS.0000000000003501
Ulrich, Nils H; Burgstaller, Jakob M; Gravestock, Isaac; Winklhofer, Sebastian; Porchet, François; Pichierri, Giuseppe; Wertli, Maria M.; Steurer, Johann; Farshad, Mazda (2020). The influence of endplate (Modic) changes on clinical outcomes in lumbar spinal stenosis surgery: a Swiss prospective multicenter cohort study. European spine journal, 29(9), pp. 2205-2214. Springer 10.1007/s00586-020-06364-0
Ulrich, Nils H; Gravestock, Isaac; Winklhofer, Sebastian; Peyneshki, Iliya; Wertli, Maria M.; Pichierri, Giuseppe; Fekete, Tamás F; Porchet, François; Farshad, Mazda; Steurer, Johann; Burgstaller, Jakob M (2020). Two-year outcome comparison of decompression in 14 lipomatosis cases with 169 degenerative lumbar spinal stenosis cases: a Swiss prospective multicenter cohort study. European spine journal, 29(9), pp. 2243-2253. Springer 10.1007/s00586-020-06449-w
Ulrich, Nils H; Burgstaller, Jakob M; Gravestock, Isaac; Pichierri, Giuseppe; Wertli, Maria Monika; Steurer, Johann; Farshad, Mazda; , (2019). Outcome of unilateral versus standard open midline approach for bilateral decompression in lumbar spinal stenosis: is "over the top" really better? A Swiss prospective multicenter cohort study. Journal of neurosurgery - spine, 31(2), pp. 236-245. American Association of Neurological Surgeons 10.3171/2019.2.SPINE181309
Ulrich, Nils H; Gravestock, Isaac; Held, Ulrike; Schawkat, Khoschy; Pichierri, Giuseppe; Wertli, Maria Monika; Winklhofer, Sebastian; Farshad, Mazda; Porchet, Francois; Steurer, Johann; Burgstaller, Jakob M (2018). Does Preoperative Degenerative Spondylolisthesis Influence Outcome in Degenerative Lumbar Spinal Stenosis? Three-Year Results of a Swiss Prospective Multicenter Cohort Study. World neurosurgery, 114, e1275-e1283. Elsevier 10.1016/j.wneu.2018.03.196
Ulrich, Nils H; Burgstaller, Jakob M; Pichierri, Giuseppe; Wertli, Maria Monika; Farshad, Mazda; Porchet, François; Steurer, Johann; Held, Ulrike (2017). Decompression Surgery Alone Versus Decompression Plus Fusion in Symptomatic Lumbar Spinal Stenosis: A Swiss Prospective Multicenter Cohort Study With 3 Years of Follow-up. Spine, 42(18), E1077-E1086. Lippincott Williams & Wilkins 10.1097/BRS.0000000000002068
