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. 2020 May 6;25(1):391–398. doi: 10.1007/s11325-020-02098-x

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© The Author(s) 2020

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Fig. 1 — Front and side view of the adapted CPAP mask. The adapted CPAP mask has a small opening in front allowing an endoscope to enter the nose, while permitting to increase CPAP pressures without air leakage