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. 2021 Mar 15;11:635667. doi: 10.3389/fonc.2021.635667

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Copyright © 2021 Lai, Chen, Fang and Chen

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Dynamic change in different functional impairments or problems for nasopharyngeal cancer patients. The estimated lifelong duration of any functional impairments or problems were the areas under the quality-adjusted survival curves. The estimated lifelong duration of any impairment of swallowing, speech, smell, and taste were 14.0, 9.8, 8.7, and 7.5 years, respectively. The estimated lifelong duration of problems with dry mouth, teeth, emotion, fatigue, sleep and social contact were 13.4, 10.1, 9.1, 12.3, 6.7, and 4.5 years, respectively.