Quality Evaluation of Free-living Validation Studies for the Assessment of 24-Hour Physical Behavior in Adults via Wearables: Systematic Review oleh Marco Giurgiu, Irina Timm, Marlissa Becker, Steffen Schmidt, Kathrin Wunsch, Rebecca Nissen, Denis Davidovski, Johannes B J Bussmann, Claudio R Nigg, Markus Reichert, Ulrich W Ebner-Priemer, Alexander Woll, Birte von Haaren-Mack