The article “Genetic and Immunologic Aspects of Sleep and Sleep Disorders,” published in the May 2013 issue of CHEST (2013;143[5]:1489-1499), contained an error in the text.
In the first paragraph on page 1495, “< 45 mm Hg” should be “> 45 mm Hg.”
The sentence now reads: Hypoventilation, confirmed by a PA co2 level > 45 mm Hg during wakefulness, is due to abnormal central respiratory drive.
The article has been corrected.