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. 2019 Apr 4;9(4):e024253. doi: 10.1136/bmjopen-2018-024253

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© Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

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Study protocol. APAP, auto-adjusting positive airway pressure; CPAP, continuous positive airway pressure; HRV, heart rate variability; MSNA, muscle sympathetic nerve activity.