Comparison of Whole-Body Electromyostimulation versus Recognized Back-Strengthening Exercise Training on Chronic Nonspecific Low Back Pain: A Randomized Controlled Study - Weissenfels, Anja; Wirtz, Nicolas; Dörmann, Ulrike; Kleinöder, Heinz; Donath, Lars; Kohl, Matthias; Fröhlich, Michael; Stengel, Simon von; Kemmler, Wolfgang (Friedrich-Alexander-Universität Erlangen-Nürnberg, 2019)