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. 2020 Aug 7;5(4):621–629. doi: 10.1002/lio2.436

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© 2020 The Authors. Laryngoscope Investigative Otolaryngology published by Wiley Periodicals LLC. on behalf of The Triological Society.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Postoperative rehabilitation of the patients. A, Pain level indicated by the patients on a numerical analogue scale ranging from 1 (no pain) to 10 (strongest imaginable pain) for the first 5 days after surgery. B, Impairment of general condition indicated by the patients on a numerical analogue scale ranging from 1 (no impairment) to 10 (strongest imaginable impairment). Values for patients of the treatment group (NAV1 SinusTracker software) are shown in black and values for patients of the control group (NAV1 optical system) are shown in grey using box and whisker blots. Each box represents the range from the first quartile to the third quartile. The median is indicated by a line. The whiskers outside the boxes represent the ranges from the minimum to the maximum value of each group. AR: navigation system with augmented reality elements (intervention group); non‐AR: navigation system without augmented reality elements (control group)