1Department of Medicine, Division of Pulmonary, Critical Care and Sleep Disorders Medicine, University of Louisville, Louisville, KY
2Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, The Ohio State University Wexner Medical Center, Columbus, OH
Previous abstract presentation: An abstract of this article was presented in ATS 2017, May 23, 2017, Washington, DC.
J. S. Smith: Speaker; Actelion Pharmaceuticals, Bayer, United Therapeutics, and Gilead Sciences. The remaining authors have no conflicts of interest to declare.
All authors contributed to this article.