Last Word on Viewpoint: Hypercapnia is more important than hypoxia in the neuro-outcomes of sleep-disordered breathing.

David Wang, Robert J. Thomas, Brendon J. Yee, and Ronald R. Grunstein Sleep & Circadian Group, Woolcock Institute of Medical Research, The University of Sydney, Australia; Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital, Sydney Local Health District, Sydney, Australia; NHMRC Centre of Research Excellence in Sleep Medicine-NeuroSleep, Australia; Central Clinical School, The University of Sydney, Sydney, Australia; Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts