©André Maier, Cornelia Eicher, Joern Kiselev, Robert Klebbe, Marius Greuèl, Dagmar Kettemann, Marcel Gaudlitz, Bertram Walter, Ursula Oleimeulen, Christoph Münch, Thomas Meyer, Susanne Spittel. Originally published in JMIR Rehabilitation and Assistive Technology (https://rehab.jmir.org), 06.12.2021.
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