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Klassen, P. D.; Hes, R.; Bouma, G. J.; Eustacchio, S.; Barth, M.; Kursumovic, A.; Jadik, S.; Heidecke, V.; Bostelmann, R.; Thomé, C.; Vajkoczy, P.; Köhler, H. P.; Fandino, J.; Assaker, R.; Van de Kelft, E.; Fröhlich, S.; van den Brink, W.; Perrin, J.; Wolfs, J.; Arts, M.; Martens, F. A Multicenter, Prospective, Randomized Study Protocol to Demonstrate the Superiority of a Bone-Anchored Prosthesis for Anular Closure Used in Conjunction With Limited Discectomy to Limited Discectomy Alone for Primary Lumbar Disc Herniation. Int J Clin Trials 2016, 3, 120-131.