The Laryngoscope
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To assess the level of functioning in patients with head and neck cancer (HNC) using the the International Classification of Functioning, Disability, and Health (ICF). ⋯ The ICF identifies problems in functioning in patients with HNC comprehensively. The results emphasize the importance of contextual environmental factors. In particular, environmental factors referring to interpersonal support should be more strongly included in rehabilitation plans for HNC.