Wellman, Andrew, Bradley A Edwards, Scott A Sands, Robert L Owens, Shamim Nemati, James Butler, Chris L Passaglia, Andrew C Jackson, Atul Malhotra, and David P White. 2013. “A simplified method for determining phenotypic traits in patients with obstructive sleep apnea.” Journal of Applied Physiology 114. American Physiological Society: 911–922.