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Gradinger, Felix; Glässel, Andrea; Gugger, Matthias; Cieza, Alarcos; Braun, Nathalie; Khatami, Ramin; Schmitt, Wolfgang; Mathis, Johannes (2011). Identification of problems in functioning of people with sleep disorders in a clinical setting using the International Classification of Functioning Disability and Health (ICF) Checklist. Journal of sleep research, 20(3), pp. 445-53. Oxford: Wiley-Blackwell 10.1111/j.1365-2869.2010.00888.x
