1 University of Pittsburgh Dorothy P. & Richard P. Simmons Center for Interstitial Lung Disease at UPMC, Pittsburgh, PA; Division of Pulmonary, Allergy, and Critical Care Medicine, Pittsburgh, PA. Electronic address: lindellko@upmc.edu.
2 School of Nursing, University of Pittsburgh, Pittsburgh, PA.
3 Division of Pulmonary, Allergy, and Critical Care Medicine, Pittsburgh, PA.
4 Division of Pulmonary, Allergy, and Critical Care Medicine, Pittsburgh, PA; University of Pittsburgh Dorothy P. & Richard P. Simmons Center for Interstitial Lung Disease at UPMC, Pittsburgh, PA.
5 Pulmonary, Critical Care and Sleep Medicine, Yale School of Medicine, New Haven, CT.