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. 2018 Jan 22;16(1):1559325817747387. doi: 10.1177/1559325817747387

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© The Author(s) 2018

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 6. — System of α-Respiro-Rn and its actual usage. Particles of uranium ore, about 4 mm in diameter, are spread evenly on the bottom of the 16-L polyethylene tank. About 2.5 L of distilled water is poured into the tank and maintained at a temperature of 35°C. Radon gas with a concentration of about 8 MBq/m³ in air accumulates in the tank on the day before use. The patient inhales radon through the suction tube.