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. 2019 Jun 25;33(8):948–954. doi: 10.1177/0269881119855978

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© The Author(s) 2019

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 1. — Interaction between 5-HTTLPR and treatment for (a) subjective sleep quality (p < 0.05) and (b) subjective number of nocturnal awakenings (p < 0.05).